The IRWIN Record Pro Entry Mechanic's Vice is fully machined on all load bearing surfaces for smooth and trouble free operation. It features a safety stop to prevent the slide being separated from body and a fused handle, Acme twin start thread for smooth and fast operation and replaceable hardened steel jaws (55 HRC). Specification Clamping Force up to 1.5 tons. Jaw Width 100mm. Jaw Capacity 83mm.