HSS DRILLS M2, M35 & M42 grades. Parallel Shank Drills (Jobber & Stub) Gold Series : Dia 1mm to 20mm Super Series : Dia 1mm to 16mm Taper Shank Drills : Regular & Super Series : Dia 3mm to 76 mm Long Series & Extra Long Series Drill Parallel Shank Long Series : 1.0mm to 16 mm Parallel Shank Extra Long Series : 3.0mm to 12.0 mm (Maximum overall length : 350mm) Taper Shank Long Series : Dia 5.0mm to 50.0mm Taper Shank Extra Series : Dia 10.0mm to 50.0mm (Maximum overall length : 500mm) Centre Drills : Type ‘A’, ‘B’, ‘R’ & BS, Range : Pilot Dia 1.00mm to 10.00 mm Masonary Drills Dia 3mm to 13mm Special application Drills. Such as Crank Shaft, Web thinned, High/Low helix, Split Point, NC spotting as per drawing.