6pcs M3-M10 Combination Drill Tap Bit Set HSS 6542 AlTiN Coated Deburr Countersink Bits

Description:  6pcs M3-M10 Combination Drill Tap Bit Set HSS 6542 AlTiN Coated Deburr Countersink Drill Bits.     Specification:  Type:Tap Drill Bit;  Material:High Speed Steel / HSS6542;  Shank:1/4" (6.35mm) hex shank;  Coating:AlTiN Nano Coated;  (The AlTiN coating will protect you drill bit well and make a better drill performance and use life) DIY Supplies:Metalworking;  Size:M3x0.5, M4x0.7, M5x0.8, M6x1, M8x1.25, M10x1.5;  Quantity:6pcs Tap Drill Bits;     Features:  High hardness, rustproof, solid and durable.  The advantage is opening, tapping, chamfering.  Self-centering point, do not need assistant center drilling or center punching.  Suitable for drilling, tapping, cutting on soft metal, aluminum plate, iron, etc.  Drilling and tapping in one, one-step processing, greatly save processing steps and time costs, improve working efficiency.  HSS6542 (M2) is of higher hardness and more durable than the HSS4341, and is suitable for cutting the steel even the 2mm 304 steel.  AlTiN nano coating is better than other coating, perfect for drill and tap.     Package Included:  1x Set (6pcs) Hex Shank Tap Drill Bits