Tig Medium Back Cap Model 300M 2 Pack
Back Cap | Medium
Weldcraft Style Medium Back Cap 300. TIG Back Caps apply pressure to the back end of the collet to force it against the collet body. This pressure holds the tungsten in place and seals the TIG torch head from the atmosphere. Back Caps simply twist into the back of the TIG torch to help create a vise that prevents the tungsten from slipping.