3PCS HSS 6541 HEX SHANK STEP CONE DRILL BIT SET TITANIUM COATED HOLE CUTTER (GOLDEN)

- Set of 3 for jobs of all sizes.
- 2 fluted edges for faster, smoother cutting.
- Hex shank prevent slippage when in chuck.
- Surface treatment: Titanium plating.
- Ideal for using to cut holes in a variety of materials including steel, brass, wood, plastic, etc.
- Material: HSS steel.
- The lengths are separeately 86mm ( 6 step ), 72.5mm ( 9 step ), 77 ( 13 step ).
- The 3 cutters come in the following sizes:
● 6 step: 3 / 16 inch（4.76mm ), 1 / 4 inch ( 6.35mm, 5 / 16 inch ( 7.94mm ), 3 / 8 inch ( 10.35mm ), 7 / 16 inch ( 11.11mm ), 1 / 2 inch ( 12.7mm ).
● 9 step: 1 / 4 inch ( 6.35mm ), 5 / 16 inch ( 7.94mm ), 3 / 8 inch ( 10.35mm ), 7 / 16 inch ( 11.11mm ), 1 / 2 inch ( 12.7mm ), 9 / 16 inch ( 14.28mm ), 5 / 8 inch ( 15.88mm ), 11 / 16 inch ( 17.46mm ), 3 / 4 inch ( 19.05mm ).
● 13 step: 1 / 8 inch（3.18mm ), 5 / 32 inch ( 3.97mm ), 3 / 16 inch（4.76mm ), 7 / 32 inch ( 5.56mm ), 1 / 4 inch（6.35mm ), 9 / 32 inch ( 7.14mm ), 5 / 16 inch ( 7.94mm ), 11 /32 inch ( 8.73mm ), 3 / 8 inch ( 9.53mm ), 13 / 32 inch ( 10.32mm ), 7 / 16 inch ( 11.11mm ), 15 / 32 inch ( 11.91mm ), 1 / 2 inch ( 12.7mm ).