3M Wetordry Tri-M-Ite 02000 413Q Series Abrasive Sheets, 9" x 11", 600 Grit, Fine Grade, Black, 50 sheets. 3M Wetordry abrasive sheet 413Q is an abrasive sandpaper constructed on a light, A weight paper backing and features a waterproof resin bonding to help prevent heat build-up.