General description This Wood Drill Bit Set includes 8 pieces of high-carbon steel drill bits in sizes 10mm, 12mm, 14mm, 16mm, 20mm, 22mm, 25mm, and 32mm. Designed for woodworking, these bits feature a four-blade design for faster chip ejection and a full screw tip for ease of use. Technical specifications Material: 45# high carbon steel Sizes: 10mm, 12mm, 14mm, 16mm, 20mm, 22mm, 25mm, 32mm Handle type: 1/4 Hex Square Handle (6.35mm) Usage Suitable for drilling in various types of soft and hard wood Self-tapping drill tip allows for accurate positioning