PROFILE EDGE - designed to profile edges such as granite, quartz, porcelain, engineered stones and concrete PROFILE SHAPE - Shape B Demi Bullnose PROFILE HEIGHT - 1/2" (~15mm) profile height GRIT/BOND -Vacuum Brazed diamond bond with #40/50 grit ARBOR SIZE - 5/8"-11 threaded arbor 1/2" demi bullnose router bits designed to profile edge on granite, quartz, porcelain, engineered stones and concrete. 5/8"-11 threaded arbor fits hand grinders and polishers for flexible profiling work. Electroplated diamond with #40/50 grit for fast grinding.