Spiral 'O' Single Flute Bit for Metal- 6mm (15/64″) ShankThe Spiral 'O' Single Flute Bit allows for superior chip evacuation, reducing the risk of chip re cutting and ensuring a cleaner cut, even for non ferrous metals like aluminum and brass. Specifications: Shank Diameter: 6 mm (15 64) Specs 6 mm * 17 mm 6 mm * 25 mm 6 mm * 30 mm Total Length 50 mm 55 mm 60 mm Material: Solid Carbide Applications: Sheet Plate Block Contour cutting, Face cleaning, Pocket milling, and Hole boring, etc. Materials: Wood,