This 8 piece auger drill bit set for wood ranges in size from 10mm to 32mm, with 4 flute design and E6.3 shank type. Made from steel, these drill bits are perfect for woodworking applications. The quick release feature makes it easy to switch out bits quickly, while the hex screw drive type ensures a secure fit in the drill. Ideal for professionals and DIY enthusiasts alike, this set provides versatile and high-quality tool options for drilling into wood with ease.