The Flex 250501 is a 120 Grit Sanding Flap Wheel LP 1503 VR Sander. The flexible sanding wheel with individual flexible flap-type is for sanding lamellae and keyway. 2 wheels are required for operation. It is used for paint removal, sanding and strong graining applications. It removes scratches, rust, old paint, scale and burrs. The 120 grit employed enables the removal of even deep scratches on stainless steel. It is also used for cleaning oxidation layers and smoothing plastics and wood.