The Hultafors QCX Quick Clamp is compact and user-friendly thanks to its one-hand grip. Its steel rail has been forged in one piece and the housing is made of fibreglass-reinforced nylon. The hardened rod and bricks provide increased durability and high performance. A slim front jaw provides increased access in narrow spaces. Pressure plates feature tracked rubber pads to protect the surface and provide increased clamping force. Its reversible head enables both internal and external attachment. Specifications: Clamping Force: up to 120kg.This Hultafors QCX Quick Clamp has the following specification: Clamping Capacity: 150mm (6in).Throat Depth: 95mm.Rail Dimensions: 20 x 6mm.Weight: 650g.Additional Information:Capacity (mm): 150Clamping Force (kg): 120