Ameritool's Pro Sanding Discs are diamond embedded resin pads! Available in both 6" and 8" sizes, the pro sanding disc series comes with a pressure sensitive adhesive backing for easy attachment to Ameritool's backing plates. These discs will outperform and outlast standard silicon carbide discs. The diamond and dye are mixed with the resin so that you will know you still have diamond on your pad if you still have color on the pad. Pro sanding discs are not an aggressive grinding disc - rather they are designed for smoothing and finishing your pieces. These pads are an industry leader in quality and durability. Pro sanding discs are color coded for easy recognition of diamond mesh.