Kreg KKS1120 Automaxx Bench Clamp, 3-Inch Auto Adjust technology automatically adjusts to any thickness and clamps materials up to 2-1/2" thick Easy to regulate clamping force uses just a simple thumbscrew and extra-large padded clamp spreads clamp pressure evenly Heavy duty, all metal construction, but with ergonomic padded grips to prevent hand fatigue Auto Adjust technology maintains consistent clamping pressure Heavy-duty all-metal construction ensures strength and durability Automaxx Bench Clamps automatically adjust to any thickness Tremendous clamping force that's easy to regulate The KKS1120 Bench Clamp offers a 3-Inch reach and clamps materials up to 212-Inch thick