Lads, you don't need them! Follow the instructions but instead of using the "pliers with the groove" grab the slack cable "carefully" with a pair of duck bill pliers if you have them or just a pair of plain common pliers. The cable will lie in the grove, then hold tension on the wire and maniac the OEM thingie to remove it while holding tension on the cable, (don't let go!!!).
Insert the slack cable end into the new "thingie". Then tense the other cable and insert the other slack cable end into the new thingie same as before, and let go. Job done.
I have a pair of brand new pliers modified with the groove you can have to pass around but as I found you don't need them.
Have done many installations and they look cool but not needed.
Cheers
nigel