Brand Name: Dremel *Diameter: 3/16 in. *Point Length: 0.5 in. *Abrasive Material: Silicon Carbide *Product Type: Grinding Stone *Shape: Cone *Maximum Speed: 35000 rpm *Number in Package: 1 pc. *Shank Diameter: 1/8 in. *Usage: sharpening, Deburring and General purpose grinding *Application: For Sharpening, For Sharpening *Overall Length: 1.5 in. *Specially designed for working with conic and flat surfaces *Designed to work well on stone, glass, ceramic, porcelain, gemstones and non-ferrous metals *Great for grinding and etching *Discovery CON, NBR, SUP, EXP