Features: Countersink feature allows for smooth and precise drilling, achieving clean and professional result. These drill bits are selected from metal and are not easy to wear. With depth stop, the included depth stop ensures accurate drilling depth, making it easy to get consistent and precise holes. These drill bits are designed with a hexagonal shank, providing a nonslip grip,any slipping or shaking during drilling. Designed for woodworking projects, these drill bits are perfect for creating clean and precise holes in wood. Specifications: Component:Metal Size:Approx.80mm/3.15inch Color: Red/Gold Package Includes: 4Pcs Countersink Drill Bit note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.