EX01 Steam Tempered Metric Dormer machine tap ranges have been designed for use with a high quality floating tool holder. For synchronous tapping on CNC machines with a rigid tapping cycle. Manufactured from HSS-XS1 premium quality vanadium powder steel and HSCo for superior toughness and edge strength, to give a high resistance to wear and long tool life. Metric Thread Short Thread Length for low torque and better chip evacuation. 2.5xD Sizes M2 to M64 45 Helix angle Spiral Flute for blind hole Three radii profile, with a constant rake angle all along the flute, is specially designed to give an optimum performance and chip evacuation in materials being threaded. Steam Tempered Suitable for: Steel, Stainless Steel and Cast Iron Special gold finish with bright flutes/thread, or steam tempering (blue) guarantee a smooth cutting action with less build up on the cutting edge.