Manufactured from special tool steel, hardened and tempered to 55HRC for long life. The 90° head incorporates a single finely ground fast cutting edge. Shank 6mm diameter. Suitable for use with hand or power drills on hard or softwood and plastics. Display packed. https://elecena.pl/product/27254812/draper-10572-12mm-countersink-bit 2024-11-13 https://elecena.pl/product/27254812/draper-10572-12mm-countersink-bit 2025-03-14