General description SwissTech 20.00MM HSS-Co 8% Threaded Shank Short Series Slot Drills are designed for precision machining. These uncoated drills are suitable for general production machining and feature a threaded shank for secure attachment. The drills are center cutting and adhere to DIN 327 standards. Technical specifications Cutter Diameter: 20mm Flute Length: 22mm Overall Length: 88.0mm Shank Diameter: 20mm Material: Cobalt High Speed Steel (M42) Number of Flutes: 2 Flute Type: Helical End Mill Type: Slot Drill Finish/Coating: Uncoated Length Type: Short Shank Type: Threaded Other information