Reliable structure The metal joint greenhouse body is made of reinforced steel and the thickness of the serrated bar is 6mm, the quality hardware which ensures great impact resistance. They can not only withstand the heavy use of the construction site, but also ensure that every use is more secure and durable Strong Clamping Power With up to 272 kg of clamping force and A metal locking mechanism, clamp provides a good choice for the carpenter or other DIY enthusiast and professional. It is light (Weight: 740g), yet sturdy, able to hold pressure for long periods of time Quick release design Operation of these clamps requires two hands but provides much more clamping pressure without braking. The quick release latch allows you to adjust and lock very simply and quickly. And the red nylon protective pads will prevent fingerprints on the parts Anti-slip mechanism The ergonomic handle definitely saves your hand strength and provides excellent grip. The double groove of the bar brings superior grip to prevent the bar from moving unexpectedly and increases the holding power in some way. In addition, the TPR handle is easier to use than traditional wooden handles, and it provides more torque for better gripping power Specifications Maximum clamping force: 272 kg, clamping width maximum: 300 mm, jaw depth: 60 mm, well suited for assembly, disassembly, repair of flat plate, box, cabinet, frame, furniture