Irwin 11SP Locking C Clamp Swivel, 3 1 2 in Max Jaw Opening, 2 5 8 in Throat Dp, 11 in Overall Clamp Lg 2W579 Dual Wall with 1 1 2 Dual Wall with 1 1 2 in Air Gap Door Closure Type Manual Close Cabinet Format Countertop Includes Leveling Feet Yes Lock Type Keyed Storage Chemical Type Flammable Cabinet EN Fire Rating Non Combustible FM Class 6050 Includes Rollers No NFPA 30 Yes Specialty Format Stackable 400 Degrees F Application Aircraft Ignition Systems Micro adjustment Swivel Pad Yes Tether Capable Tethered Clamping Force Not Rated Tether Style Tether Capable Body Material Alloy Steel Jaw Opening Maximum 3 1 2 in Screw Mechanism1 Adjust Pressure Clamp Type C Clamp Body Finish Nickel Plated Includes Swivel Pad Yes Release Mechanism Trigger this clamp is a reliable tool for any professional or DIY project