Dormer HSS Drill Bit, 8.3mm Head, 3 Flute(s), 90°, 1 Piece(s) - G1068.3

90° Tri-Flat Shank Countersink. Countersinks manufactured from premium quality high-speed steel for increased hardness/toughness, improved cutting edge strength and extended tool life. These counter sinks are designed for the production of 90° countersinks in most metals and features ground flats for positive location in 3-jaw chucks. Features and 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