The 600 Grit CLR85 (photo shown is 150 Grit) is a rounded cylinder shaped diamond bur. The approximate head diameter is 6.75mm, and the approximate head length is 13mm. This bur is great for grinding or carving all types of stone, glass, tile, metal, wood and more... The 600 Grit is intended for smoothing, blending, and pre-polishing. It will not remove much material, and will leave you with a smooth, matte, pre-polished finish. As with all Lasco Diamond Burs, the 600 Grit CLR85 is a high quality, durable, 100% Natural Diamond bur, and is made in the USA. The CLR85 is also available in 40 Grit, 80 Grit, Grit, 150 Grit, 200 Grit, 400 Grit, and 600 Grit.