Made from premium high-speed steel (HSS), this countersink delivers exceptional cutting performance and long-lasting sharpness. Featuring a 3-flute design, the Dormer G106 ensures smooth, chatter-free operation, providing a clean and accurate 90° countersink on various materials, including steel, aluminium, wood, and plastics. The 3-flute configuration enhances chip removal, reducing clogging and increasing efficiency for faster and more precise work. The 90° angle of the countersink is ideal for creating countersunk holes for flat-head screws, ensuring a flush finish for a professional appearance. The durable construction of the Dormer G106 guarantees reliable performance even under heavy use, making it suitable for both high-speed and manual operations. Features & Benefits • Ground flats for positive location in 3-jaw chucks • Universally suitable for many materials • Can be used on soft ductile materials • Manufactured from premium quality HSS Specifications • Diameter: 40mm • Overall Length: 118mm