Bosch Breakthrough drill bit sds max-9 break through, Rotary hammer, 5.5 cm, 600 mm, Brick, Concrete, Limestone, 45 cm, SDS Max Bosch Breakthrough drill bit sds max-9 break through. Proper use: Rotary hammer, Drill bit diameter: 5.5 cm, Length: 600 mm. Number of drill bits: 1 pc(s)