IRWIN Zip Wood Drill Bit - 20mm

The IRWIN Blue Groove 4X Flat Bit is designed for wood drilling with a diameter of 20mm and a length of 152mm. It features double cutting spurs that scribe the outside of the hole to reduce breakout, a thicker cutting edge for longer drilling life, and a blue groove point and cutting edge for faster chip removal. The bit has a 10% larger shank for added durability and a 1/4” (6mm) hex shank that prevents slipping in the chuck. Made from high-speed steel (HSS), this bit is ideal for professional and DIY applications.