General description Manufactured from HSS-Co, the Kennedy 1/2" X 90DEG HSS-Co 5% Rose Multi-flute S/S Countersink is designed for deburring and chamfering most metals and plastics. Its 6-flute design ensures excellent chip control and flow, making it an efficient tool for various applications. Technical specifications Countersink Angle: 90° Cutting Diameter: 1/2 in Finish/Coating: Uncoated Head Type: Multiple Flute Material: Cobalt High Speed Steel Number of Flutes: 6 Overall Length: 2 in Shank Diameter: 3/16 in Shank Type: Straight Standards Met: BS 328 Other information