Use your bench vise as a sturdy base with this unique Slip Roll. Specifications:12" forming width 20 gauge max capacity in mild steel5 wire-grooves (3/16", 5/32", 1/8", 1/16", 1/32")1-3/16" roll diameter1-3/4" minimum forming diameterPrecision adjusting screws for upper and lower front rolls24 lbs. shipping weight.