This Heavy-Duty Bar Clamp Is Made From Strong And Durable Engineering Grade Plastic. It Is Capable Of Evenly Distributing Up To 306Kg Of Sustained Clamping Force. The Robust I-Beam Structure And C45 Rail Reduces Unwanted Bending. The Tpu Protective Cushions Safeguard The Workpiece From Marking And Damage. One-Handed Operation Is Easy Thanks To The Quick Release Trigger. There Is Also A Quick Change Button To Convert The Clamp To A Spreader. It Is Designed With Long Handles To Enable Better Leverage For Reaching Higher Pressure Easily.PTDDRPDIR18930