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1. Material: high speed steel 2. Length: M3 is about 6.6 cm, M4 is about 6.7 cm, M5 is about 6.7 cm, M6 is about 6.8 cm, M8 is about 7 cm, and M10 is about 7.1 cm. 3. Diameter: M3 is about 3 mm, M4 is about 4 mm, M5 is about 5 mm, M6 is about 6 mm, M8 is about 8 mm, and M10 is about 10 mm. 4. Shank diameter: general hexagonal handle, 6.35 mm 5. Weight: about 82 grams/set 6. Scope of application: suitable for rapid drilling and tapping processing 7. Contains: M3, M4, M5, M6, M8, M10 8. Features: durable material, diverse specifications, wide applicability, not easy to rust, easy to use 9. Note: It is recommended to use it on a tapping machine. Pay attention to the operation method when using the electric drill. Excessive shaking and tilting will affect the tapping and even break the tap
