Draper Tap And Die Set (37 Piece) - 37MManufactured from alloy steel. Taps and dies suitable for cleaning and cutting threads on mild steel and aluminium. Supplied with the correct drill bits for tapping. Contents held in plastic insert within a steel storage case. Carton packed. 8 x Metric dies: 3 x 0. 5, 3. 5 x 0. 6, 4 x 0. 7, 5 x 0. 8, 6 x 1. 0, 8 x 1. 25, 10 x 1. 50 and 12 x 1. 75 1" O D 8 x Metric taper taps: 3 x 0. 5, 3. 5 x 0. 6, 4 x 0. 7, 5 x 0. 8, 6 x 1. 0, 8 x 1. 25, 10 x 1. 50