The Faithfull G-Clamp is built to resist distortion, the ribbed frame is manufactured from malleable SG iron making these clamps virtually unbreakable.The spindle has acme cut threads to provide a smooth operation and maximum clamping pressure.The frames have a powder coated finish for increased resistance to corrosion making them suitable for a wide variety of metalworking and woodworking applications.1 x Faithfull Heavy-Duty G-Clamp 300mm (12in) Clamping Pressure:2500lbfAdditional Information:Clamp Type: Heavy-DutyCapacity (mm): 300Size (in): 12Throat Depth (mm): 114