6 Best RJ45 Crimpers for Reliable Connections

Most commonly used in the computer industry, crimping tools were also once common with phone technicians. They work by bending one or two pieces of metal to form a crimp, which then holds the pieces together.

Network cables are crimped by placing wires into the crimper, followed by the connector, then compressing the two pieces so that they are pinched solidly together. Modern crimping tools are used for a variety of connections and should be a part of every electrician’s kit.

There are three major types of RJ connection: RJ22, RJ11/RJ12, and RJ45. Of these, the 8-position RJ45 connector is the most commonly used for data and network connections.

The best RJ45 crimper needs to be high quality, easy to use, and have good alignment to ensure every connection is clean and consistent. Each of the following crimpers are designed for RJ45 connections, but are also able to handle other connection types for maximum versatility.

Our 4 Favorite RJ45 Crimping Tools

	Product	Compatible Connectors	Made In
	Klein Tools VDV226-110	RJ45 Pass-Thru, RJ11/RJ12	Taiwan
	Platinum Tools EZ-RJ PRO-HD	EZ-RJ45, RJ45, EZ-RJ11/RJ12, RJ11/RJ12	Taiwan
	Klein Tools VDV226-011	RJ45, RJ22, RJ11/RJ12	Taiwan
	TRENDnet TC-CT68	RJ45, RJ11/RJ12	China
	Klein Tools VDV226-005	RJ45 Pass-Thru	Taiwan
	Platinum Tools EXO	EZ-RJ45	Taiwan

RJ45 Crimper Reviews

#1 – Klein Tools VDV226-110

While not made in the USA like some other Klein Tools products, the Klein VDV226-110 is still very well made and designed to be an all-in-one tool that handles the jobs of crimper, cutter, and stripper. It can crimp 4, 6, and 8-position modular connectors (RJ11/RJ12 and RJ45 Klein Tools Pass-Thru). Note that it’s not compatible with standard non-pass-thru RJ45 connectors like the models below.

This Klein Tools model efficiently crimps and strips paired conductor data cables and trims the wire flush to the connector’s end face. The Pass-Thru technology allows you to verify wire order before cutting, significantly reducing prep time and minimizing errors.

A handy wiring diagram on the tool itself takes the guesswork out of tasks. The black oxide steel construction, full-cycle ratchet mechanism, and compact, non-slip comfort grip mean this is a tool you’ll be able to use for years to come. It works with CAT3, CAT5e, and CAT6/6A cables with wire gauges from 28-22 AWG.

This tool has a sturdy design that users can feel. The spare blade stored in its handle (replacement blade set VDV999-076) is also an appreciated touch. When used correctly, this tool cuts clean and quick the first time every time.

A few owners have complained about a gap between the trimmer and crimper which prevents accurate cuts. This problem is likely due to those individuals using generic RJ45 plugs instead of the recommended Klein Pass-Thru plugs, which are a slightly different design. Another common issue is the lack of a proper locking mechanism, which often results in the tool getting caught on things.

>> Check current price <<

 

#2 – Platinum Tools 100054C EZ-RJ PRO-HD

Platinum Tools aims to take the guesswork out of crimping with the EZ-RJ PRO-HD. Compatible with the EZ connector system as well as standard modular plugs (with the exception of AMP), this tool is designed to be the only one you’ll need. It’s particularly well-suited for larger OD cables with thicker wire gauges and harder insulation.

It’s constructed with a patented “crimp and trim” system to help make every connection both clean and flush. The zero-flex frame prevents torque loss during the crimping cycle, while the tool steel die head assembly provides 360 degrees of connector support for uniform FCC-standard terminations.

The ratcheted, high-leverage design creates a stable platform that works well on heavier wire gauges and thick insulation. It’s compatible with all EZ-RJ45 and EZ-RJ12/11 connectors, making it versatile for both ethernet and telephone applications.

Many users have claimed this to be the best crimping tool for its price range and are quick to recommend it to others. They comment on the sturdy metal construction and ease of use. The fact that it cuts wires and crimps means the wires can be sent completely through, allowing you to verify they’re in the proper order. As this is a versatile and quality tool, many users tout it as the perfect starter tool.

A few have reported that the tool arrived with a defect in the die that causes alignment issues. This in turn will prevent pins 7 and 8 from crimping properly. It has been confirmed by Platinum Tools that two production runs totaling 6,000 crimpers failed to go through the hardening process.

While most were caught, three batches (270 crimpers) slipped onto the market. The company is replacing them as they surface, so be sure to notify them and provide pictures if you believe you have one of these defective tools and they will remedy the situation.

>> Check current price <<

 

#3 – Klein Tools VDV226-011-SEN

The Klein VDV226-011-SEN is an all-in-one tool that allows you to cut, strip, and crimp both STP/UTP and flat-satin paired-conductor cables easily.

The precision-ground, carbon steel crimping dies are complimented by a ratchet safety-release and blade-guard for the best experience in both quality and safety. It crimps 4, 6, and 8-position modular connectors (RJ22, RJ11/RJ12, and RJ45).

The tool is made from steel with a black oxide finish for durability. It’s designed for Western Electric (WE)/Stewart Stamping (SS)-type modular connectors and works with CAT3, CAT5e, and CAT6/6A cables.

Owners of the VDV226-011-SEN have found the quality to be higher than many similar crimpers (as is the case with most Klein Tools products). They note that it works perfectly for RJ45 crimping, and while it may have trouble scoring some smaller Cat5e wires, there have been no issues with terminating Cat5 and Cat6 connections.

A few users have also commented that the tool is smaller than expected (approximately 7.5 inches long), making it easier to use if you have smaller hands or a weaker grip. Some users have complained that the tool cuts too deep when stripping Cat5, 5e, and 6, causing minor damage to the wire.

Additionally, as with many tools on the market, it’s easy to end up with a Chinese knock-off if you don’t purchase through a reputable site. The counterfeit versions tend to have loose dies, and when used as an RJ45 crimp tool, they almost always have difficulty cutting the 7 and 8 pins.

>> Check current price <<

 

#4 – TRENDnet TC-CT68 Crimping Tool

TRENDnet has created a tool specifically designed for 6- and 8-position modular plugs (RJ11/RJ12 and RJ45). The all-steel construction is compact with easy-to-use hand grips for a more comfortable experience.

The tool is able to crimp, cut, and strip flat cables with ease. Stripping round Cat5/6 cables is also possible, thanks to an adjustable cutting depth. The tool features a ratchet mechanism and precision-ground components for reliable performance.

While users have had many positive things to say about the TC-CT68, one of their biggest comments has been on the low cost. The quality approaches that of many more expensive tools, and owners have noted that it works perfectly for making RJ45 terminations.

Many professional users state that this tool holds up for both home and industrial use with no loss of quality. The compact design measures approximately 11 inches in length, making it easy to handle and store.

One of the main complaints about the TC-CT68 is related to the ratcheting when trying to store the tool. The handle must be squeezed slowly until it clicks, as closing it all the way will result in it springing open.

Another common complaint is that it can be easy to nick Cat5/6 cables when stripping if you are not careful. Finally, cuts are not always cleanly made, and users often ignore this feature entirely.

>> Check current price <<

 

#5 – Klein Tools VDV226-005

Klein Tools offers another excellent option with their VDV226-005, a compact Pass-Thru crimper designed specifically for data applications. This tool is perfect for those who want Klein’s Pass-Thru technology in a more portable package.

The VDV226-005 crimps and trims Klein Tools RJ45 Pass-Thru connectors onto paired-conductor cables (round STP/UTP cables) in one smooth operation. The Pass-Thru design allows you to verify wire order before completing the crimp, significantly reducing prep time and eliminating costly mistakes. It works with CAT3, CAT5e, and CAT6/6A cables.

Like its larger sibling above, this tool features an on-tool wiring guide to minimize wiring errors. The compact, non-slip comfort grip reduces hand strain and makes storage easy. At just over 5 inches long, it’s notably smaller than full-size crimpers, making it ideal for technicians who work in tight spaces or need a more portable solution.

The tool trims flush to the end face of the connector, eliminating unintended contact between conductors. This precision, combined with Klein’s legendary durability, makes it a reliable choice for professional installers and serious DIYers alike.

One important note: this tool only works with Klein Pass-Thru connectors and is not compatible with standard (non Pass-Thru) connectors. Users consistently praise the clean crimps and the convenience of the Pass-Thru system, though some wish it had the additional cutting and stripping capabilities of the VDV226-110 model.

>> Check current price <<

 

#6 – Platinum Tools 100062C EXO Crimp Frame

Platinum Tools brings innovation to the crimping world with their patented EXO Crimp Frame system. This modern design represents the next generation of their popular EZ-RJ45 crimping tools, offering improved ergonomics and functionality for professional installers.

The EXO system features a push button lock for easy storage and an interchangeable, reversible die design that facilitates comfortable ambidextrous operation. The included EZ-RJ45 die is specifically designed for terminating the original pass-through EZ-RJ45 connectors, which have become an industry standard. The tool works with Cat5e and Cat6 cables, including both shielded and unshielded variants.

One of the standout features is how connectors lock into the tool for correct positioning during crimping, helping minimize user error. The ergonomic TPR (thermoplastic rubber) handles provide a comfortable grip even during extended use. We appreciate that the die system allows for single-cycle crimp and flush trim operations.

The EXO frame is also compatible with the separately available EXO-EX Die (P/N 100071C) for terminating ezEX-RJ45 connectors on larger Cat6/6A cables, making it a versatile investment for technicians who work with various cable types. Users consistently praise how smoothly the tool operates with some even saying that the crimp completes so easily, they initially didn’t realize it was finished.

It’s important to note that Platinum’s EZ-RJ45 connectors and crimp tools are designed to work together as a system. The tools are not intended to be compatible with other brands, so you’ll need to use Platinum connectors for best results and to maintain your warranty.

>> Check current price <<

 

RJ45 Crimping Tool Buying Guide

What is RJ45?

RJ (Registered Jack) connectors are standardized telecommunication network interfaces originally defined by the U.S. Federal Communications Commission (FCC). The “RJ” designation refers to a wiring standard rather than the physical connector itself.

The term RJ45 is commonly used to describe the 8P8C (8 Position, 8 Contact) modular connector used for Ethernet networking. However, technically speaking, the original RJ45 standard referred to a specific telephone wiring configuration that used a keyed 8P8C connector (not the unkeyed Ethernet connector used today).

In modern networking, “RJ45” informally refers to the 8P8C modular connector used for Ethernet cables (Cat5e, Cat6, Cat6A, etc.), which has eight pins for data transmission.

This video details how to properly terminate a Cat6 cable with an RJ45 crimper:

What is EZ-RJ45?

A patented innovation by Platinum Tools, the EZ-RJ45 connector uses a pass-through design so installers can check that the wires are in the correct order before crimping and trimming. The design requires a compatible Platinum Tools crimper, as it’s not interchangeable with standard connectors or other pass-through systems.

Klein Tools have their own version of this concept, which they call Pass-Thru, but the two systems are not cross-compatible due to slight design differences.

What Are RJ45 Connectors Used For?

As mentioned, the RJ45 is primarily used for Ethernet cables. Ethernet cables were once mainly used for connecting computers to routers or networking devices in the same room, but are now common for a wide range of peripherals including printers, security cameras, VoIP phones, smart TVs, and gaming consoles.

RJ45 connectors are used on twisted-pair network cables (Cat5e, Cat6, Cat6A, and higher) that carry data signals for both home and commercial networks. They’re also used in Power over Ethernet (PoE) applications, where the same cable delivers both data and electrical power to devices such as cameras and access points.

Pass-Thru vs Standard RJ45 (Which Do You Need?)

Choosing between pass-thru and standard RJ45 connectors affects which crimper you’ll need and how efficiently you’ll work.

Standard RJ45 connectors require you to measure and cut wires to the correct length before inserting them into the connector. The wires stop at the connector body, and you verify wire order through the translucent housing before crimping.

These connectors are compatible with most crimpers and are available from virtually any manufacturer at a lower cost per piece.

Pass-thru connectors (like Platinum Tools’ EZ-RJ45 and Klein Tools’ Pass-Thru) allow the wires to extend completely through the connector body. You can visually confirm that all eight wires are correctly positioned before crimping, and the tool crimps and trims the excess wire in one motion.

This design greatly reduces failed terminations but usually requires brand-specific tools (Platinum Tools crimpers for Platinum connectors, and Klein Tools crimpers for Klein connectors).

For beginners or anyone making cables regularly, pass-thru systems are often the better choice. The ability to visually verify wire order saves time and reduces waste, easily offsetting the slightly higher connector cost. If you already have standard connectors or prefer universal tool compatibility, standard systems remain perfectly viable.

Wire Gauge and Cable Type Compatibility

Not all crimpers handle every cable type equally. Understanding compatibility helps you select the right tool for your projects.

Wire gauge (AWG) indicates conductor thickness (higher numbers mean thinner wire). Most Ethernet cables use 22–26 AWG conductors. Cat5e typically uses 24 AWG, while Cat6 and Cat6A often use thicker 23 AWG conductors for improved performance and Power over Ethernet (PoE) support. Standard RJ45 crimpers generally handle this range easily.

Cable types also vary in overall thickness. Cat5/Cat5e cables have smaller diameters that most crimpers can handle without issue.

• Cat6 cables often include a center spline or separator to reduce crosstalk, which can make them slightly thicker and stiffer, requiring a sturdier crimper.
• Cat6A is significantly thicker, with larger conductors and insulation. If you work with Cat6A regularly, choose tools specifically rated for larger cables.

Shielded (STP) cables include foil or braided shielding that may require specialized connectors and crimpers designed for shield termination. Most quality crimpers can handle both shielded (STP) and unshielded (UTP) connectors, but always verify compatibility.

For general Cat5e/Cat6 work, any quality crimper will perform well. For Cat6A or mixed cable types, invest in heavy-duty tools rated for larger outer diameters and heavier gauges.

Ratcheting vs Non-Ratcheting 

The ratcheting mechanism significantly impacts crimper performance and connection quality.

Ratcheting crimpers lock the handles together once you start squeezing, preventing them from opening until the crimp cycle is complete. The tool applies consistent pressure through each stage and releases automatically when the crimp is fully seated. Most include a safety release lever to stop mid-cycle if needed.

 

The advantages are substantial:

• consistent results with identical force every time
• proper termination by forcing complete crimps
• reduced hand fatigue through mechanical leverage
• professional-quality connections

Every tool in our main reviews features a ratcheting mechanism because it’s essential for reliable RJ45 terminations.

Non-ratcheting crimpers work more like pliers (you control the pressure and can open them at any time). They’re simpler and less expensive but rely heavily on user technique for consistency. For occasional use by experienced users, they can still get the job done.

However, we strongly recommend ratcheting tools for anyone making Ethernet cables regularly. The consistency and quality improvement justify the modest extra cost. Poor crimps can lead to intermittent network issues, and ratcheting mechanisms help get connections right the first time.