countersink bit for metal 9mm 12mm 16mm drill bit

• Different Sizes to Meet Various Needs - Length of countersink drill bit is 6.35mm (1/4 inch hexagonal handle). They can meet your various needs in different situations.
• Premium Quality - The 1/4″ shank countersink tools are made of standard high speed steel. With high-frequency quenching for heat treatment the HSS countersink bits have high hardness and toughness. Coated by titanium the chamfer kit is rustproof and has a long service life.
• Eliminates Chatter and Vibration - The edge of these woodworking drill bits is hardened and honed for sharpness. With five-flute and chatter-free design and staggered teeth these 5- chamfering drilling bits can provide a chatter-free .
• Excellent Working and Easy to Identify - 1/4 inch quick change shank five- chamfering with groove 90° angle on the point for sharp and precise countersinking. There\'re numbers on the corresponding countersink hole so it\'s convenient for you to pick out the one you need quickly.
• Widely Used - The chamfering drill bits with 5 flutes are mainly used for wood openings reaming chamfering screw head and so on. Also applies to MDF plywood acrylic PVC board and so on.

1 Set Countersink Drill Bit