Dremel 8220 Operating/Safety Instructions Manual page 18

Dremel Accessories (Cont.)
Structured Tooth Tungsten Carbide Cutters
Silicon Carbide Grinding Stones
(blue/green)
Aluminum Oxide Grinding Stones
(red/brown)
Diamond Wheel Points
Wire Brushes
For best results wire brushes
should be used at speeds not greater than
Bristle Brushes
15,000 RPM. Refer to Operating Speeds
section for proper tool speed setting.