Whether you work in stainless steel, aluminum or any other alloy, the Enduro-Flex flap discs will replace grinding wheels and sanding discs and provide exceptional cost savings, higher productivity and a more consistent surface finish. One step finishing solution to reduce cost. Quiet, vibration-free grinding. Raised hub fits all standard grinder back flanges. Superior performance, cool cutting, non-loading. ECO-TRIM backing for increased life and flexibility. Safe and easy to trim.