Dapetz ® 6pcs M3-M10 Combination Drill Tap Bit Set HSS 6542 Titanium Coated Countersink,Applicable to Some Types of Carbon Steel and Ordinary Steel, Copper and Aluminum Magnesium Alloy Drilling Hole.

PREMIUM QUALITY: Dapetz countersink drill bits set made from High-speed steel with titanium-coated for corrosion resistance. Coming with 6 different metric sizes: M3,M4,M5,M6,M8,M10 chamfered 90 degrees 3 flute end mills, can meet your daily usage and replacement. 3 FLUET DESIGN: Countersink drill bits with 3 flutes and staggered cutting teeth, these 90 degree high speed steel deburring tools ensure chip flow smoothly, fast cutting, no chatter, more concentric and easier to use. PRECISE DRILLING: Quality countersink drill bit set provides good deburring and leaves no scratches, nicely improving your work efficiency. WIDE APPLICATION: HSS countersink drill bits are suitable for workpieces with high hardness, such as aluminium, thin iron, insulation or PVC sheets, practical in daily life. PERFECT COMPATABILTY: Chamfer countersink bits sets are compatible with a wide range of common drilling rigs, including vertical rigs, so you can apply with confidence.