Enduro-Flex stainless flap discs will replace grinding wheels and sanding discs and provide exceptional cost savings, higher productivity and a more consistent surface finish. Wont contaminate stainless steel, load or glaze. Offers superior performance on heat sensitive metals. There is no need to discard the disc when the flap overhang is worn down to the backing because the Enduro-Flex disc can be restored to like-new performance by reducing the diameter of the Eco-Trim backing. Always use with flange WAL30B057. For use with aluminum, non-ferrous metals, and stainless steel. Package of 10.