Features: 1. Drills pilot hole countersinks and counterbores in one easy operation. 2. Hex shank fits in impact drivers and driver-drills. 3. Best adjustable wood countersink drill bits set ideal for woodworking. 4. Drill bits are precisely fit into the countersink sleeves and the two chamfered flutes enable the faster operation and self-clearing drilling on the swarf making perfectly sized and shaped holes. 5. This precision countersink with properly-centered drill bits an adjustable cutter counterbore and a sharp point tip allows for extremely high accuracy andprevents marking of the workpiece. Our countersink drill bits have been extensively tested to ensure the highest possible quality. Notice: *Actual color may be slightly different from the image due to different monitor and light effect *Please allow 1-3cm deviation due to manual measurement Description: Package Size: 15*6.5*1.5cm includes: 5 pcs x Wood Countersink Drill Bit Set "