Features: Brand new and high quality Woodworking countersunk drill bit: Woodworking countersunk drill bit: The countersunk drill bit set includes 5 sizes of countersunk drill Bit, equipped with 5 spare guide Bit and 5 hexagonal wrenches. The countersunk drill bit steel, which hardness, wear resistance, is not easy to break rusts, and provide excellent cutting ability. The chamfering device is carbon steel. Adjust countersunk drill bit: adjust countersunk drill bit with adjust depth stop rings, flat on the handle with a hexagonal wrenches, used to control the depth of the guide hole and replace tighten the guide drill bit. Ensures that the holes completely aligned each time. Multipurpose: for household professional woodworking engineering, used for wood, plastic, PVC, fiberboard, particleboard, plywood, rubber, etc. Drill, sink, and reverse hole in step. This set come with 5 replacement drill Bit. Specifications: Componenet: Steel Package Includes: 1Set Countersink Drill Bit note: Please allow 1-3mm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual of the item.