HHIP 3900-1728 2 Piece Quick Clamp Mill Vise, 8" Width x 4" Depth Jaw.5" Clamp (Pack of 1) Work locates directly on bed for rigidity Quarter-turn handle clamps work firm enough for heaviest cuts Mechanical type, actuated by Acme screw riding in bronze nut and guided by two H and G pins Vise handle included Jaw measures 8-inches width by 4-inches depth