Rubi TGS Superpro Cutting And Rounding Diamond Blade (Choice Of Size)Description RUBI TGS is a diamond disc for dry cutting and grinding of all types of high hardness materials, such as granite, slate, porcelain stoneware, rustic stoneware, refractories, clinker or quartz conglomerates, among others. The TGS cutting and grinding disc is a SUPERPRO quality disc suitable for use on grinders*. The specific design of the diamond band on the TGS cutting and grinding disc offers a higher cutting speed on harder materials