• Aluminum Oxide, C-Weight Paper/Film Backing, Open Coat.
• Made with a strong .0005 Mylar film for superior edge tear resistance, outperforms other C-Weight gold discs...
A terrific value at almost half the price of 6 individual sponges! Each sponge features medium grit on one face and edge, while the opposite face and edge has fine grit. Flexible core conforms nicely...