50GRIT DIAMOND BURR BITS FOR ROTARY TOOLS USE ON CERAMICS, GLASS, TILES, PLASTIC, STEEL, WOOD ETC 2.35MM SHANK FOR POLISHING, DEBURRING & CUTTING NOT RECOMMENDED FOR SOFT METALS AS IT CLOGS THE DIAMOND PARTICLES CASE QUANTITY 200 INNER QUANTITY 20 FULL PRODUCT DIMENSIONS 11x9x2