[High quality] Made of high quality steel, with heavy-duty plastic jaw pads and release trigger, which increases pressure, reduces bending and deflection, not easy to break [Easy to use] Just repeatedly squeeze the one-handed clamps trigger to reach the strength or distance you need, and the sliding arm holds the wood in place [Working perfect] Clamping force is 11 kg, the maximum clamping distance can reach 3cm-10cm. The jaws of the spring clamp can be used for items with irregular surfaces, the thick pad can protect the surface and fix the workpiece [Applicable] Suitable for spread or clamp parts for welding, glueing or wood work projects, ideal for DIY woodworking, photography, metal processing and modeling [Bar clamps set] Package includes 4 pieces 4 inches ratchet bar clamps and 4 pieces heavy-duty spring clamps, suitable for woodwork, modeling, photography etc., Weight: 0.992080179 Pounds, Manufacturer: BESELER