TAKATA Wrapping Hardware 2-bar-slide for 75mm (2") webbing

While this 2 Bar Slide is safer, it is much harder to wrap in if you are not used to doing it. Once you figure out the trick, it's not hard at all. 
Instruction video by Schroth Racing 'How to wrap your harness correctly

This is a 2 Bar Slide designed for use with 3" webbing. Its sole use is to thightly wrap a 3" shoulder belt around a bar or pin. It is lighter than a 3 Bar Slide and offers virtually no slip when wrapped correctly. Even a correctly wrapped 3 Bar Slide will has what is called microslip - when a small amount of webbing slips through the bracket when a significant load is placed on the webbing.