Use Product Options Menu Above to Select Grit: 
Coarse-Red (A-KB18314) or Fine-Blue (A-KB18315)

Typhoons have unique structurally aligned tungsten carbide points that last long and do not load quickly. Typhoons are ideal for use on hard and soft woods, acrylic, die stone, plaster, plastic, hard rubber and fiberglass. Use the BLUE fine grits for general shaping and sanding. The RED coarse grit is for even more rapid and aggressive shaping and roughing out work. Made in USA.  35,000 RPM Maximum Speed.

Clean with HB58 Brass Brush. Do not use a file card or steel brush to clean Typhoon burs and sleeves.