10pcs With Center Punch Step Drill Bit Set 1/4 Inch Hex Shank Hard Countersink

Features: Package Includes: 3 pieces of step drills 6 pieces of 5-Flute countersunk drills and 1 piece of center punch in the package; enough quantity and type are enough to meet your various needs. Step Drill: Made of high-speed steel and coated with titanium various sizes of 4-12 mm 3-12 mm 4-20 mm. These step drills have the functions of heat resistance and ion and are practical and durable. Countersunk Bit: Made of carbon steel the surface of the countersunk bit is plated with titanium to ; they are suitable for quick replacement and are suitable for most power tools with 1/4-inch hexagonal shank the cutting edge is hardened and polished to improve Sharpness up to sharp and accurate countersinking. Automatic Center Punch: The automatic center punch is very effective. It can make pits on the workpiece to the screw and drill bit from shaking and drifting so as to help you complete the work accurately and quickly saving time and energy. Wide Uses: Very suitable for drilling reaming chamfering screw heads etc.; suitable for chamfering various types of materials such as wood plywood aluminum iron copper fiberboard PVC board etc. Specification 6pcs 1/4 inch Hexagon Shank 5 Flute Countersunk Bits: Material: High speed steel Size: 6mm/0.2inch 8mm/0.3inch 9mm/0.35inch 12mm/0.47inch 18mm/0.7inch 19mm/0.75inch Shank Type| 1/4 Inch Hex Shank Color: Gold + Silver Great for: Sinking 90 degree holes into wood and soft metals countersunk screws and fixings suitable for diy home and general building/engineering using. 3pcs Step Drill Bits: Material:High carbon steel Size: 4-12mm: 4mm/0.15inch 6mm/0.2inch 8mm/0.3inch 10mm/0.4inch 12mm/0.47inch 3-12mm: 3mm/0.1inch 4mm/0.15inch 5mm/0.19inch 6mm/0.2inch 7mm 8mm/0.3inch 9mm/0.35inch 10mm/0.39inch 11mm/0.4inch 12mm/0.47inch 4-20mm: 4mm/0.15inch 6mm/0.2inch 8mm/0.3inch 10mm/0.39inch 12mm/0.47inch 14mm/0.55inch 16mm/0.63inch 18mm/0.7inch 20mm/0.79inch Use for: For cut holes in a variety of materials including steel brass wood et Center Punch: Material:Copper Total length: 130mm/5inch Use for:Marking Package included: 1pc x Center punch 3pcs x Step drills 6pcs x Countersunk bits