The Knipex 97 51 10 Crimping Pliers (blue/red, for RJ-11/12 and RJ-45 connectors) are designed for users who value precision and need a reliable tool for professional or home installation of network connections. With this tool, every connection will be of high quality and ready for today's fast digital connections.

This product is a specialized tool for crimping RJ-11, RJ-12 and RJ-45 modular connectors, making it an indispensable tool for anyone dealing with network or telephone installations. It is perfect for electricians, DIYers, IT professionals and all consumers who want to make or repair their cables quickly and correctly.

The pliers solve the problem of incomplete or insecure connections, which often cause connection disruptions or poor data transfer quality. By using these pliers, the user ensures that each crimped connection is robust, solid and reliable, which is also reflected in better network stability and reduced chances of communication disruptions.

Evaluation of key product features

⚖️ Compare features with other products of your choice

The blue-red pliers impress with their modern look and ergonomic shape, which fits comfortably in the hand even during prolonged use. With a total length of between 151 mm and 200 mm, they enable precise work - regardless of whether you are working in the home workshop or in the field.

They are specifically designed to crimp the most common modular connectors (RJ-11/12 for telephony and RJ-45 for networking equipment), which means versatility and space saving in the toolbox. Their robust construction and precise mechanisms ensure a consistent, strong crimp, so that each connector is firmly attached to the wire and allows for optimal conductivity.

Using advanced materials and proven Knipex technology, the tool stands out among professional pliers of this type. Wear resistance and precise power transmission from the handle to the jaws ensure a long service life and minimal operator effort. The tool is designed to reduce the possibility of errors and improve speed of execution, which is especially important for larger projects or series production.

The pliers are a timeless choice if you want professional results in a wide range of electrical tasks. They combine robustness, comfort and functionality in one piece - for everyone who values efficient, carefree work with network cables.

User view

The Knipex 97 51 10 crimping pliers are a top choice for anyone who frequently works with network cables or repairs electrical wiring at home. They are most appreciated by those who value the ability to easily and quickly replace or make RJ-11, RJ-12 and RJ-45 connectors without any problems, whether at home in their workshop or when repairing office or home networks. The Knipex brand is well known among users for its reliability and quality - once you hold these pliers in your hands, the feeling is really different from cheap solutions with a short lifespan.

Whether you're an experienced craftsman or a first-time DIYer, users often say that these pliers have saved them a lot of time and frustration because they're precise, ergonomic, and make changing connectors a breeze. Knipex makes sure you can rely on the tool at the crucial moments when you want everything to be "right" on the first try.

Why buy at Enaa

At Enaa, we always ensure that selected tools, such as Knipex pliers, are clearly presented, so you can be sure that you are getting a proven product from original supply chains. In addition, we support you with easy search methods and expert advice when purchasing, so that your experience is always practical and hassle-free.

Answers to frequently asked questions

Do the pliers support all standard RJ-11, RJ-12 and RJ-45 connectors?

Yes, the Knipex 97 51 10 pliers are designed to allow precise crimping of all common network and telephone cable connectors, including RJ-11, RJ-12 and RJ-45.

How do I maintain my pliers to keep them in optimal condition?

It is recommended to clean them with a soft cloth after each use and to lubricate the moving parts occasionally. Do not use them to cut other materials as this risks damaging the precision blades and mechanisms.

Is the tool suitable for beginners?

Absolutely – thanks to the ergonomic handle and clear design, handling the pliers is easy even for those who are first time assembling or repairing network cables.

What cables can I crimp with these pliers?

The pliers are designed for use with most standard UTP and STP network and telephone cables that use RJ-11, RJ-12 or RJ-45 connectors.

Does the length of pliers affect their usability in tight spaces?

With a length of around 190 mm, the Knipex pliers offer a good balance between precision and handling in confined spaces, so they can be used without any problems even in tight spaces or in junction boxes.

Description updated: February 2026