Features:
- 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 73.5 ( 20 step )・ 80mm ( 10 step )・ 68mm ( 5 step ).- The 3 cutters come in the following sizes:￠ 4 - 12mm: 4・ 6・ 8・ 10・ 12mm.￠ 4 - 20mm: 4・ 6・ 8・ 10・ 12・ 14・ 16・ 18・ 20mm.￠ 3 - 12mm: 3・ 4・ 5・ 6・ 7・ 8・ 9・ 10・ 11・ 12mm.