Seven piece set for jewellers and goldsmiths. Contents: 3 ball milling bits with hole (for milling fittings for pearls etc.) in sizes 3.4, 4 and 5 mm. 1 double cone miller for milling bases for stones with 1.4 mm diameter. 1.0 and 1.4 mm millers with concave heads (for rounding off wires, etc.). 1.0 mm hardened spear drill for pearls and stones included. All shafts 2.35 mm.