3Mâ„¢ Trizactâ„¢ PSA Cloth Disc 237AA features sharp-cutting aluminum oxide mineral adhered to an X-weight, water-resistant polyester cloth backing. Made using microreplication technology, this abrasive works well for a range of low- to medium-pressure applications: finishing, polishing, blending and deburring. It can be used on many metals, including mild and stainless steel.