With the Hikoki 780112 hss step drill bit, you drill clean and accurate holes across multiple diameters without changing bits. Covering a range from 4 to 20 mm, this tough high-speed steel bit produces smooth, burr-free cuts in sheet metal and plastics. The 8 mm straight shank fits securely into standard 10 mm and 13 mm chucks to prevent slipping during demanding tasks. It is the practical choice for enlarging holes in thin-walled materials, electrical enclosures, and ducting.
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