The PTI 5pc Drill and Countersink Set is perfect for creating flush surfaces in wood by drilling and countersinking in a single operation. This set allows you to drill a pilot hole, clearance hole, and countersink simultaneously, ensuring a smooth finish for screws or wood plugs. The adjustable pilot drill accommodates different screw lengths and can also produce counterbored holes for hiding screw heads with wood plugs or filler. Key Features: Function: Drills pilot, clearance, and countersink holes in one step Adjustable: Adjustable pilot drill for various screw lengths and counterbored holes Sizes: Includes 2, 2.4, 2.8, 3.2, and 3.5mm pilot drills Compatibility: Suitable for No. 5, 6, 8, 10, and 12 gauge screws Application: Ideal for drilling and countersinking wood Storage: Supplied in a convenient folding wallet