General description This 5-piece Hex Shank Countersink Drill Bits Set is designed for precision drilling with adjustable pilot drill and counterbore depths. The set includes five high-speed steel (HSS) M2 tapered bits, allowing for clean finishes and minimal marring. Technical specifications Material: High-speed steel (HSS) M2 Sizes: 1/8 inch, 9/64 inch, 5/32 inch, 3/8 inch, and 1/2 inch Counterbore angle: 82° Hex shank size: 1/4 inch Measurement allowed error: +/- 1-3cm Compatibility and accessories Universal compatibility with most drills Includes a wrench for setting the depth stop Usage Suitable for various materials including natural woods, chipboard, plywood, MDF, decking, drywall, and plastics Recommended operating speed: around 200 RPM for optimal results Other information Color: As shown Note: Light reflection and different displays may cause slight color differences