Features Steel Material: This spiral screw tap drill bit set uses high quality high speed steel, high hardness, rustless, sturdy and durable. High Efficiency: Time saving, one time processing of drilling and tapping, greatly saving processing steps and time costs, and improving work efficiency. Functional Drill Set: This spiral screw tap drill set is multi functional, suitable for drilling, tapping and cutting soft metals, aluminum plates, iron, etc. Practical: This hex shank drill and tap kit is blue coating, both beautiful and practical for working use. Attention: Please note that the steel materials are not suitable for this set because it can be easy to break. Specification: Item Type: Spiral Tap Drill Bit Kit Material: High Speed Steel Purpose: 3 in 1 (Punching --- Tapping --- Deburring) Range Of Application: Suitable for Processing Soft Metals (Such as Aluminum Alloys, Zinc Alloys, Tin Alloys), Thin Wood Boards, And Plastics With A Thickness Of Less Than 5 mm/0.2in Specifications: M3x0.5, M4x0.7, M5x0.8, M6x1, M8x1.25, M10x1.5SpecificationsPitch :in (Approx.)Blade's Length:in (Approx.)Handle Length :in (Approx.)Total Length :in(Approx.)M30.021.260.872.13M40.031.260.872.13M50.031.340.872.20M60.041.380.872.24M80.051.420.872.28M100.061.420.872.28 Package List:6 x Tap Bit Note:Steel materials are not suitable and easy to break. Package List 6 x Tap Bit