?FEATURES:Includes 3? (76mm) Bench Clamp and Bench Clamp Base with bolt and knobAutomaxx? auto-adjust technology adjusts the clamp automatically to match material thicknessClamps materials up to 3 1/2? (88mm) thick: 3? (76mm) reachEasy-to-regulate clamping pressure with a simple thumbscrewExtra-large padded clamp spreads clamping pressure evenlyErgonomic padded grips prevent hand fatigueCompatible with Kreg Clamp Trak and Clamp Vise