FEATURES:6? (152mm) reach; clamps materials up to 5? thick (127mm)Adjusts automatically to match material thicknessEasy-to-regulate pressure with a simple thumbscrewLarge clamp faces spread pressure evenlyErgonomic padded grips prevent hand fatigueWorks with the Kreg Pocket-Hole Jig R3 Clamp Pad Adapter, as well as the Portable Base