About KREG KHC3-INT 76mm Wood Project Clamp +Automaxx Quick, convenient clamping with automatic adjustment 76mm reach; clamps materials up to 76mm thick Adjusts automatically to match material thickness Easy-to-regulate pressure with a simple thumbscrew Large clamp faces spread pressure evenly Ergonomic padded grips prevent hand fatigue Works with the Kreg Jig R3 clamp pad adapter, as well as the portable base