IntellinetRJ45 Crimp Tool – All-In-One Modular Universal Crimper with Wire Cutter & Stripper Functions – Crimps RJ45, RJ22, RJ12, RJ11, RJ10, RJ9 Connector Plugs – Lifetime Mfg Warranty - 211048

Used this to crimp RJ9 fittings, it worked great. I was surprised at how well it stripped the insulation off of the flat 4C phone wire. The trick to keeping the handles closed is to close them until just before the final crimp point. The ratchet mechanism will hold them closed. If you close them too far, they spring back open.I only used it on RJ9's, but would expect it to work just as well on the other sizes.

I love the tool and recommended to everyone.

Worked very well.

I used the Crimper on my cable and it worked perfectly and resolved my problem. I put the crimper in my tool box and it will serve me for years to come… thank you for offering it as its was just what I needed…

I have had multiple cable making kits…this tool is all-in-one and easy to use!. One stop shop!

This is really nice for the price and works smoothly. Time will tell how well they hold up.

Solid crimping!

Falsely advertised pass throughs - it does not work with pass throughs and does a horrible job crimping regular RJ45s