10pcs Step Drill Bit Set 1/4 Inch Hex Shank 5 Flute Countersink Drill Bit Set with Automatic Center Punch

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 bit set 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 corrosion resistance and rust prevention and are practical and durable Countersunk bit set made of carbon steel the surface of the countersunk bit is plated with titanium to prevent rust 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 prevent 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 range of 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 plastic PVC board etc Specifications 6pcs 1 4 inch Hexagon Shank 5 Flute Countersunk Bits MaterialHigh speed steelSize6mm 8mm 9mm 12mm 18mm 19mmShank Type1 4 Inch Hex ShankColorGold SilverGreat forSinking 90 degree holes into wood and soft metals c