Kreg KSC-1485-40 Automaxx Heavy Duty Sliding Bar Clamp, 40-Inch When you want the durability and adjustability of Automaxx Clamping but you need more clamping capacity, turn to Automaxx Bar Clamps These quality clamps automatically adjust to your material thickness, whether it's thick, thin, or in between Clamp quickly and easily by simply sliding the clamp heads against your workpiece Auto-Adjust technology automatically adjusts to any clamping need Easy-to-regulate clamping force using a simple thumbscrew Extra-large clamp faces spread clamping pressure evenly Ergonomic padded grips provide comfort and prevent hand-fatigue Heavy-duty, all metal construction ensures strength and durability