2PCS Woodworking Benchtop Quick Clamp 19mm Manual Bench Dog Hold Down Clamp for DIY1Sturdy And Wear Resistant: This bench dog clamp is made of excellent quality aluminum alloy and stainless steel material to ensure maximum durability and strength. 2Adjustable: This bench dog hold down clamp is easy to lock or unlock and can apply up to 600 pounds of adjustable clamping pressure to prevent workpiece movement. 3Compact And Portable: This workbench surface hold down clamp is small in size and light in weight, which is very convenient to carry around and use. 4Good Compatibility: This woodworking benchtop quick clamp is well adapted for clamping workpieces up to 70mm thick and with a 3/4in (19mm) hole diameter. 5Easy To Use: This dog hole clamp is simple to use, place the jig into the bench saw hole and then secure the wood to the jig and press the gears, this makes it easier to clamp and reduces hand fatigue.