•Backup pad designed to support 3M Roloc 4 dia. Surface Conditioning Discs and 3M Roloc Bristle Discs
•Disc pad assembly works with a variety of 1/4-20 INT drills, sanders and grinders
•Medium density hard rubber construction adds durability for tough jobs
•Roloc attachment makes changing discs fast and easy
•12,000 max. RPM