The wheel helps take out the slack so you can tighten the wire down by ratcheting the tool.
To help grip the tool better when wearing rubber gloves & protectors.
To make it easier to change the direction of the wrench while wearing rubber gloves & protectors.
We made every part of this wrench with controlled machining to make the tool 100% better not 90% better.
We want to make sure that every application in the field is covered to help all linemen.
It is a non-conductive cap that covers the hex to safely eliminate the possibility of a flashover when working in tight places.
For overhead, RW-04N (5/16) hex, and for underground, RW-12N (5/16) hex with stationary pentagon socket.