The MaxSteel heavy-duty bench vice is made from cast iron for strength and durability. The base bolts directly to the workbench surface for stability, and swivels and locks for versatility. Roll-formed screw threads ensure smooth operation and durability. Chrome plated hardware resists corrosion. Size: 100mm (4 in). Stanley Maxsteel Heavy-Duty Bench Vice 100Mm (4In) in Black