The hard rubber back up pad provides firm support for Surface Conditioning Discs.

Disc Diameter:  2 in,
Face Mounting Type:  TS,
Back Mounting Type:   Straight Shaft,
Back Mounting Size:   1/4 in,
Max. RPM:      24,000 RPM,
Density:  Medium,
Vacuum Hole Design:  Non-Vacuum,
Body Material:  Rubber