This Ratchet Spring Clamp Is Made From 30% Fibreglass Strengthened Nylon For Longer Life. It Features A Robust I-Beam Frame For Extra-Strong Pressure. The Strong Ratcheting Mechanism Allows For Variable Clamping Pressure. The Quick Release Trigger Allows For Fast And Easy Positioning And Release. There Is A Soft Grip Handle For Comfortable Use.PTDDRPDIR31745