KANT-TWIST USA made No. 420 6" capacity machinists or toolmaker's clamp complete with non marring jaws for finely machined or delicate surfaces. Jaws have the same gripping surface as standard metal jaws, however, made of high strength polyurethane, floating jaws that always stay parallel. These clamps come bulk packed from the manufacturer and may have scuffs on the chrome finish but are all new .
Combine the best features of ordinary c-clamps and parallel clamps!