The Wilton Mechanics Pro Vises are designed for durability. These vises feature an enclosed spindle, precision slide bar, innovative thrust bearing, 360-degree swivel, and a lifetime warranty. Other notable features include a precision-machined slide bar, an enclosed spindle, a needle roller thrust bearing, a 60,000 psi ductile iron movable jaw and base, a large anvil work surface, and a 360-degree swivel base with double lockdowns. These vises are available in five sizes, with jaw sizes ranging from 4-1/2" to 10".