Features Made of high quality HSS steel with heat treatment, it is sturdy and durable. Suitable for soft tapping metal, aluminum, iron. Drilling and tapping are combined together, one-step process, greatly save process steps and time, improve work efficiency. Universal hex handle, high strength and hardness. With an available length of 15 mm, the drill bit is suitable for many jobs. Specification: Condition: 100% Brand New Item Type: Hex Shank Tap Thread diameter: 0.5mm Material: High Speed Steel Usable length: approx. 15 mm/0.6 inches. Handle diameter: 6.35 mm/0.3 inches Specifications: M3, M4, M5, M6, M8, M10 System: Metric Through Hole/Blind Hole: Through Hole Function: removal of internal chips Scope of application: machine Coating: Type A: Silver Coating, Type B: Ti Coating, Type C: Blue Coating, Type D: Bronze Coating Package list: 6 x Hex Shank Tap Package List