3M 99421 Pro-Pak Wetordry Sandpaper Sheets 9×11 320 Grit 25Pk
Model 3MCO 99421. 3M™ Pro-Pak™ Between Finish Coats (Wetordry™) can be used with water to reduce clogging and extend abrasive life. Use to sand between coats of varnish, paint or other finishes.