"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. Double Lock-Downs Yes, 360 Swivel Base Yes, Replaceable Jaw Yes, serrated, Jaw Width in. 5, Pipe Jaw No, Jaw Capacity in. 8. 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"