Hole saws made from HSS bi-metal with variable toothing. The variable tooth pitch (4 - 6 teeth per inch) guarantees chatter-free drilling. Hole saws with mounting thread, additional driver holes from 32 mm diameter. For efficient drilling of steel, cast iron, stainless steel, copper, non-ferrous metals, hard and soft wood, plasterboard and other materials. Saw length 50 mm, max. drilling depth 40 mm, mounting thread M 16. for mounting shafts (order no. 20 7584, 20 7586 and 20 7589). for mounting shafts (order no. 20 7584, 20 7586 and 20 7589). Diameter 68 mm.
