Kreg, Face Clamp, Large Pad On 1 Arm Is Placed Directly Across The Top Of The Joint Line To Help Create A Perfectly Flush Joint As Screws Are Driven, Designed To Both Hold The Joint Line Flush While Screws Are Driven & Secure Jig Into Place On The Work Piece, Ergonomic Comfort Grip Reduces Slipping & Eliminates The Possibility Of Pinching, Best For A Majority Of Pocket Screw Applications, 3" Reach Will Handle Work Pieces Up To 2-3/4" Thick, For Kreg Jig Pocket Hole System.