This bench dog is made of , which can withstand use. Features the aluminum alloy material, which has high durability, not easy to deform. Fine workmanship, ensures practicality. This bench dog will make the routing and planing easier and smoother. Features - ColorRed -Material:Aluminum alloy - Size: 3.40X2.70X2.30cm/1.34X1.06X0.90in Suitable hole diameter: 20mm - Made of high grade aluminum alloy, durable and not easy to fade or deform. - Square contact surface for non-destructive and secure attachment to your wood. - It can withstand higher working conditions and is more durable than plastic or nylon benches. - Suitable for holes with a diameter of 20mm, the tolerance is small, and it can be directly placed into for fixing. - The bench stop is essential hold-downs, perfect for planing, routing, cutting and sanding. Package list: 3 x bench dogs