... : 125MM, 150MM, 200MM, 250MM, 300MM, 350MM, 400M, 450MM2. Roller quantity in per bush hammer: 3PCS, 4PCS, 5PCS, 6PCS, 9PCS and 12PCS3. Segment ... quantity in per roller: 30PCS and 45PCS4. Mainly used for the stone finishing ... 30S1. “T” means the roller quantity in per bush hammer, “S” means the segment quantity in per roller.D. 150*4T*30SD. 200*4T ...