Kant Twist 411-2 Quick Acting Hold Down Clamp with"T" Slot Base and Bolt, 3" Holding Size, 2-1/4" Length x 2-11/16" Width, 1500 lbs Holding Capacity Best for drill presses and shop machines of every type For holding where thickness and surface are not exact from part to part Used for rill press, assembly molds, furniture, planners, vertical turrets, mills, woodworking, plastic tooling, fixtures of all types 1500 lbs holding capacity Measures 2-1/4" length by 2-11/16" width