3M 6" 360L IMPERIAL STIKIT RESIN BOND SANDPAPER DISC ROLLS - This product earns the 3M Purple color which indicates the latest 3M technology, greatest cost/value and highest quality available. 3M Stikit Disc Rolls 360L are high-performance discs designed to cut faster and last longer on composite substrates enabling the user to obtain maximum usage from each disc. Disc is 6" x NH. Product is sold by the roll of 125 discs. 4 rolls per case.