GRINCUTREX vacuum brazed diamond hand profiler router bits are designed for creating professional and beautiful edge profile on stone granite, marble,travertine,limestone, quartz or engineered stone, porcelain or ceramic tiles countertop profile edges.You can also use it on concrete countertops when you do DIY. The Vacuum Brazed technology boosts efficiency and ensures a fast, clean cut without sacrificing router bit durability.GRINCUTREX can offer routers bits for profiling stone edge such as Eased,Demi Bullnose, 45 Degree Bevelled, Ogee, Dupont, and Full Bullnose etc. The hand profilers come with 5/8"-11 threads for compatibility on any variable speed polishers or grinders at speeds of 500-4500 RPM. GRINCUTREX diamond router bits will be a good choice for both persons who with or without fabrication experience.