2 inch Surface conditioning disc BLUE Surface Condition Mini Disc Grit Size: Coarse Brown Medium Red Very fine Blue Characteristics: manufactured containing a woven fabric imbedded in nylon structure of the non woven fibers Providing additional strength and durability for removing paints,rust, corrosion, exit burrs, weld splatter, parting lines and deburring on ferrous and nonferrous metals. Blending weld seams and deburring edges. ALSO 3 INCH