... 250MM, 300MM, 350MM, 400M, 450MM2. Roller quantity in per bush hammer: 3PCS, 4PCS, 5PCS, 6PCS, 9PCS and 12PCS3. Segment ... Mainly used for the stone finishing way of bush hammer finish;5. Works with high efficiency,5-6 ... of manual processing;6. The grit of bush hammer face can be adjusted and the size of ... *30S1. âTâ means the roller quantity in per bush hammer, âSâ means the segment quantity in per roller ...