Create a Safe, Stable Work Station Add mobility to your Multi-Purpose Shop Stand with these heavy-duty casters. Built to last and perform, these casters feature a dual-locking mechanism that won’t roll or pivot once engaged, resulting in an extremely stable work station.Features Single foot lever locks roll and swivel Rubber wheels roll smoothly Steel, Rubber Construction 150 lbs. per caster (4) 3" (76mm) dual-locking casters and mounting hardware