Mini G-Clamp Set: This set of min C clamps are the must-have tools for assistance with gluing, nailing, welding, cutting, bending and much more. An essential set of three sizes (25mm, 50mm, 75mm) for a wide range of uses and applications. Specifications of G Clamps: Max opening capacity of 1 inch is 25mm, depth is 25mm; Max opening capacity of 2 inch is 50mm, depth is 30mm. Max opening capacity 3 inch is 75mm, depth is 50mm. More detail information you may refer to our pictures. Small But Durable: The clamping force of 25mm (1") g clamp is up to 270kg (600lbs). 50mm (2") g clamp is up to 310kg (700lbs). 75mm (3") g clamp is up to 610kg (1350lbs). Provide Maximum Pressure: Clamps have a long sliding T-handle to produce maximum torque with little effort thereby reducing hand fatigue. Chrome-plated screw thread turns easily and does not bind so your clamps will last as long as you need them. Very simple and easy to use regardless of experience. Built To Last: These tools are forged from cast iron and so are strong enough to withstand high pressures. A gloss finish prevents corrosion and scratching for added longevity. Moving parts are made from heat-treated carbon steel and Chrome-plated to prevent rust., Manufacturer: MAXPOWER