HSS TiN stepped drill set, sheet steel case, 3 parts, 4 - 30 mm. Supplied = assembled. Finish = TiN. Colour = gold. Suitable for (material) = sheet metal/non-ferrous metal. Conforms to = DIN 1412 C. Number of parts = 3 pcs. Min. drill range = 4 mm. Max. drill range = 30 mm. Tip angle = 118 . Cutting material = HSSE-TiN. Product type = stepped hole cutters. High strength hinge. Tip in accordance with DIN 1412 C. Split point as tip. Right hand cut, spiral grooves. 118 point angle, 90 step angle. Silent operation, high cutting performance. High performance steel, with TiN coated surface. The cone simplifies retraction from sheets that have been drilled through. Higher feed rates possible in non-ferrous metals in particular due to low cut pressure.