1. Material: high speed steel2. 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 mm5. Weight: about 82 grams/set6. Scope of application: suitable for rapid drilling and tapping processing7. Contains: M3, M4, M5, M6, M8, M108. Features: durable material, diverse specifications, wide applicability, not easy to rust, easy to use9. 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 tapSpecification: Package Weight One Package Weight 0.10kgs / 0.23lb One Package Size 10cm * 8cm * 1cm / 3.94inch * 3.15inch * 0.39inch Qty per Carton 288 Carton Weight 30.00kgs / 66.14lb Carton Size 50cm * 50cm * 60cm / 19.69inch * 19.69inch * 23.62inch Loading Container 20GP: 177 cartons * 288 pcs = 50976 pcs40HQ: 412 cartons * 288 pcs = 118656 pcs