Preferred Abrasives Flex-N-Strip Wheels Type 27 4.5 x 7/8 Purple Grit 57043Flex N Strip products are made from an open construction of durable nylon fibers and coarse, fast cutting grains that will not load up. They are excellent for removing paint, rust, coatings, and cleaning welds. More durable and faster cutting than Black. Contains more grain and resin. Removes paint, rust and coatings quickly without compromising the geometry of the workpiece Extra coarse (XCS) grade silicon carbide provides aggressive cutting and