Description: 【Durable Material】Bench dog clamps is made of high quality aluminum alloy, fine workmanship, rustproof, sturdy and durable. 【Adjustable Clamping Pressure】3 pressure level available, low, medium and high, Different clamping force is suitable for a various work needs. 【Dog Hole Clamp】Fit perfectly and clamp very tightly without moving out of the borehole. The cam is running perfectly parallel to the pressure plate, pressure is well distributed. 【Easy to Use】Drill a vertical hole in your workbench top to accommodate the holdfast and drop it in place, adjust the clamping pressure until it jams tightly in the hole to hold your work firmly. 【Application】Woodworking Benchtop Quick Clamps is suitable for carving, routing, sanding, and other woodworking jobs. Specification: Material: Aluminum Alloy Clamping Range: 19mm (3/4in): 0-60mm (2.56in), 20mm (0.79in): 0-25mm (0.98in) Size Chart: Package Size: 17.5cmx14.5cmx5cm/6.89inchx5.71inchx1.97inch Package Includes: 1 Woodworking Hold Down Clamp Note: Please allow slightly errors due to manual measurement and different monitors.