WORKPRO Spade Drill Bits Set Wood 8 PC, Flat Bit, 1/4 inch Quick Change Hex Shank, 12 mm/ 16 18 20 22 25 28 32 mm, Storage Case

Unique 3-Point Design: This wood drill bit set has a 3-point design with triangular edges for rapid penetration and efficiency. Grooves allow fast chip evacuation, increasing speed and ensuring clean cuts Sturdy & Long-lasting: Our spade drill bit sets are made of quality carbon structural steel, which has high strength, hardness, and elasticity. Hardness can reach HRC48 after heat treatment, which provides a long service life 8-Piece Spade Drill Bit Set: Each bit is marked for easy size identification. Sizes: Ø 12 / 16 / 18 / 20 / 22 / 25 / 28 / 32 mm. Total length: 150 mm. Suitable for all types of cork, hardwood, PVC, and plastic Quick Change Hexagon Shaft: The 1/4 "hex shank supports quick replacement and is suitable for most drilling machines. Grooves on the hex shank provide excellent non-slip torque, preventing the drill chuck from slipping Easy to Store and Carry: It comes with a portable storage case and each card slot is marked with size scales for easy access and put back in order, perfect for keeping tools organized and portable in different workplaces