An angle grinder is a handheld power tool used for construction and stone field. With different kinds of tools, it can be used for different applications, like: Cutting (diamond saw blade). Grinding (diamond grinding disc). Polishing (diamond polishing pads). When equipped with bush hammer rollers, it is also great for texturing the surface of stones and concrete. Sunny Superhard Tools has developed several different types of bush hammer rollers for angle grinders, like our model number of BHR7, BHR8, and BHR10. This BHR8 bush hammer scratching roller is designed for making the multiline finish on the surface of granite, marble and other stones. We refitted it on Bosch angle grinder, and it also fits other grinders like Dewalt, Hitachi, etc. It can be used for grinding stones in a narrow space. The total weight (the scratching roller and Bosch angle grinder) is about 8.5kg and very convenient for operating. Sunny Superhard Tools uses high quality of YG8 carbides on this scratching roller, and the dustproof design lengthens its lifespan. Chek our demonstation of this scratching roller as follows: