I bought an ITBEBE crimping tool kit, RJ45 ends and Cat6 cable termination boots and I regret to say that I got everything back because the crimping tool produced 1 out of 5 bad crimps. I don't know if it's a combination of all of them, but the continuity cuts when crimping weren't flush, my cable tester kept saying there was a short, and my devices only got 100 FDX speeds instead of 1000 FDX. I've used my old pliers with ends that have a loading bar and they've been perfect every time. The boots are too stiff and you have to slide them off the end to disconnect the cables. I just thought I was saving some money and unfortunately I ended up spending another $60 on the company that invented crimps/connectors. There's nothing quite like sweating in the attic trying to terminate wires because they didn't work the first time.