material: these quick release grip F are made of plastic material, sturdy and durable, delicate and practical; With fine manufacturing process, each quick release grip F clamp has good performance design: single hand quick release trigger, the grip and trigger design provides simple one-hand operation; The wood bar clamp can be disassembled without damage, and can be converted into a spreader, which is suitable for many types of DIY projects Easy to use: the grip of trigger can be comfortably, just press the quick release button to the arm into the length, the wood will be clamped and , which is convenient for your subsequent work Wide application: 4-inch quick release bar clamp is a practical woodworking hand tool, widely applied in furniture manufacturing and packaging industry, which can small wooden boards into larger boards for gluing and woodworking projects; It is suitable for DIY woodworking, metal processing, modeling, etc. High Wear-resistant and durability. Color: black Material: plastic Package Contents: 20x Wooden clamp Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.