Typhoons have unique structurally aligned tungsten carbide points that last long and do not load quickly. Use the fine grits for general shaping and sanding. The coarse grit is for rapid and aggressive shaping and roughing out work. Typhoons are ideal for use on hard and soft woods, acrylic, die stone, plaster, hard rubber and fiberglass.
10,000 RPM Max Speed.

IMPORTANT NOTES: 
1. Use with A-69212 Short Hub when mounting discs onto Angle Grinder.
2. Use A-HB58 Brass Brush to easily remove dust or chips from between rows of carbide points .
3. Do NOT use a file card of steel brush to clean Typhoons.