Locking C-Clamp 18 In Capacity 8 In Throat Depth 9 1/2 In Clamping Force 2000 Lb Locking Mechanism Release Lever Screw Mechanism Adjusts Clamping Pressure Pliers Length 18 In Nickel Plated Hardened Carbon Steel For Welding and Fabricating ASME B107.36-2002