Tap SetM3*0.5, M4*0.7, M5*0.8, M6*1.0, M8*1.25, M10*1.5, M12*1.75 in seven sizes. Outstanding QualityStraight flute taps made of high speed steel with nitride coating, high hardness and resistance to rust, wear and oxidation. Unique ProcessScrew point tap evacuates chips downward, easy and fast chip removal, ideal for tapping through holes. Ideal Tapping KitFor tapping machines, tapping machines, CNC machines, etc. Use with tapping oil to protect the tap and achieve better thread quality. Wide Range of ApplicationsSuitable for tapping new threads or repairing old threads in aluminum, copper, alloy steel, non-ferrous metals, hard plastics and stainless steel (below 30HRC). Product Specifications. Material: HSS 6542 Surface Treatment: Nitride Coating Thread End Diameter: M3, M4, M5, M6, M8, M10, M12. Screw Pitch: 0.5mm, 0.7mm, 0.8mm, 1.0mm, 1.25mm, 1.5mm, 1.75mm Please Note: 1. Machine taps are recommended to be used with a tap chuck with overload protection. Hand operation and electric drills are not recommended. 2) Please allow slight inaccuracies in product size and color due to differences in measurement methods and display screens. Package Included: 7 * Taps