Description 58 Pieces Metric Sets (Quantity of each component part given in brackets) Designed to save set up time and solve most clamping problems. Manufactured to high standards. All step clamps are forged and hardened and the step blocks are made from high-quality steel. All components (other than the studs) are heat-treated and finished in black oxide. Available to suit a full range of metric and imperial T-Slot widths. Supplied in steel racks which can be wall-mounted or fitted to workbenches for ease of storage (except M16 set which is supplied in wooden box). Thread Size M12 System of Measurement Metric Set Size 58PCE Material Steel Contents Engineers Studs: (x4) 75mm x 30mm, (x4) 100mm x 30mm, (x4) 125mm x 30mm, (x4) 150mm x 30mm, (x4) 175mm x 30mm, (x4) 200mm x 30mm What's in the box 1 x 14mmxM12 T-Slot Machine Clamp Set