Locking Chain Clamps, Locking Chain Clamp, Max. Opening 3 3/8 in, Clamping Force Not Rated, Nominal Clamp Size 9 in, Number of Pieces 1, Swivel Pad No, Tether Capable, Overall Clamp Length 9 in, Nickel Plated, Steel, Locking Mechanism Release Lever, Screw Mechanism Easy Release Trigger, Micro-adjustment, Government Specifications GGG-W-00649