600mm 24" 80mm depth Screw Clamp - Robert Sorby SelectCast iron heads and nickel plated bar for maximum strength and corrosion resistance 80mm throat depth, achieving a clamping force of 250 kgf. Easy movement, sliding head for adjustable clamping capacity Serrated grooves on the steel plated bar for enhanced grip Plastic pads securely fitted to both the swivel shoe and the fixed head to provide an even distribution of clamping force across the workpiece Ergonomic, traditional wooden handle for a firm