General description The 5Pcs Countersink Drill Bit Set is designed for precision drilling with adjustable depth stops. This set includes five tapered bits in various sizes, allowing for versatile use across different materials. Technical specifications Sizes: 1/8 inch, 9/64 inch, 5/32 inch, 11/64 inch, 3/16 inch Material: M2 HSS (High-Speed Steel) with aluminum alloy collar Shank: 1/4 inch hex shank for compatibility with most drills Depth adjustment: Adjustable pilot drill and counterbore depth Recommended speed: Approximately 200 RPM for best results Compatibility and accessories Includes 5 tapered bits Includes a wrench for depth adjustment Usage Suitable for natural woods, chipboard, man-made boards, plywood, MDF, decking, drywall, and plastic boards For optimal performance, operate at slow speeds to achieve smooth edges Other information