Material: The woodworking benchtop quick clamps are made of high quality stainless steel and aluminium alloy, robust and durable, providing maximum durability and strength for quick clamping. 3 Gears Adjustable: 3 pressure level available, high, medium and low. Different clamping force is suitable for a various pressing materials, a variety of use scenarios. Easy to Use: Drill a vertical 20mm 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, then you can start your work.Slide the table press clamp into your table dog hole to hold the wood in place and press the gears for easier clamping and less hand fatigue. Very simple to operate, a handy tool for small and light work. Various Applications: For applications where you need to consistently shift your workpiece; Carving, routing, sanding, finishing, and general woodworking jobs; Rough stem and uniquely hooked profile offers a strong hold on difficult workpieces. 20mm Dog Hole: Fit perfectly in 20mm holes and clamp very tightly without moving out of the borehole;The cam is running perfectly parallel to the pressure plate which means pressure is well distributed. Product Name:Bench Clamp Maximum clamping size:2.4inch (60mm) Purpose:Auxiliary clamping on woodworking workbench Scope of application:household use, DIY modification of woodworking workbench Workbench hole:20mm Colour:Black Material:Stainless steel+Aluminum Alloy Package Contents: 1 x Bench Clamp Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.