HIGH QUALITY: The fixture is made of high-quality carbon steel and plastic, which can be adjusted quickly and durable, with strong clamping force, suitable for woodworking and DIY projects SIZE: 4 inches, the maximum clamping distance can reach up to 3cm-10cm, comes with a total of 4 pieces to meet professional needs ERGONOMIC DESIGN: The handle with pressure trigger, made of nylon, so it is non-slip. You can use them to quickly fix larger pieces after they have been glued QUICK RELEASE: One-hand clamp can quickly and easily clamp or extend separate parts at work, the trigger works the same when converted to the extension function MULTIPURPOSE: The bar clamp is used to quickly and accurately fix small parts and renovate old chairs. Widely used in furniture manufacturing and packaging industry