Perfect for auto repair and machinery where metric threads are specified. Suitable for drilling, tapping, and cutting on soft metal, aluminum plate, iron, and similar materials. Fast replacement composite cone design uses drill edge principle. Combines drilling and tapping in one step, reducing processing steps and saving time, improving working efficiency. Made from high-speed steel for sharpness and durability. High concentricity ensures accurate drilling. Self-centering point eliminates the need for pilot holes or center punching. High hardness, rust-resistant, solid and durable construction. Product Name: 12-Piece Hexagonal Three-Point Drill and Hexagonal Twist Drill Set Specifications: - 1 x 60mm quick-change adapter - Three-point drills: 3/32", 1/8", 3/16", 1/4", 5/16", 3/8" - Hexagonal twist drills: 3/32", 1/8", 3/16", 1/4", 5/16" Color: As shown in picture Material: High-speed steel Package Contents: 1 x 12-piece hexagonal three-point drill and twist drill set (in plastic case) Note: - Due to different production batches, the color of the plastic case may vary; specific color cannot be requested. - Lighting and display differences may cause slight variations in color between the image and actual item. - Measurement allowance: +/- 1-3 cm. - Package includes only the items listed above; other accessories are not included.