Kreg KHC-1420 Automaxx Face Clamp, 6-Inch The perfect clamp for Kreg JoineryThis product is easy to use easy to install and highly durable This is easy to use and easy to install As a bonus feature, the clamp is also compatible with the Kreg Jig Jrs Portable Clamp Adapter Auto Adjust technology automatically adjusts to any thickness up to 4-1/4-Inch Easy-to-regulate clamping force using a simple thumbscrew Extra-large clamp faces spread clamp pressure evenly Ergonomic padded grips prevent hand fatigue Compatible with Kreg Jig, Kreg Portable Base and Kreg Jig