"The Wilton Columbian Machinist Bench Vise features steel jaw faces made from hardened tool steel with a deep knurled pattern to ensure positive gripping. U.S.A. Jaw Width in. 5, Pipe Jaw No, 360 Swivel Base Yes, Replaceable Jaw Yes, serrated, Jaw Capacity in. 8, Double Lock-Downs Yes. Strong, ductile iron main casings are guaranteed against defects in workmanship and materials Replaceable jaw inserts Generous ground/polished anvil Swivel base rotates 360 and gear lock bolt ensures positive locking against slippage"