This bush hammer scratching roller is very simple to make the scratching finish on Granite, Marble or other Stones. It works efficiently and can be easily operated. It is an ideal bush hammer tool for making scratching finish. The line space can be customized upon your requests. Product Name:Bush Hammer Scratching Roller Applied Machine:Angle Grinder Applied Material:Granite, Marble, or other Stones Working Part:Tungsten Carbide / PCDs Working Conditions:Dry Scratching Line Space: 2.5mm