Non-woven abrasive will not rust, splinter or shred like steel wool and lasts longer than sandpaper. A&h abrasives nylon abrasive discs fits fein and dremel H&L. Are used to put a very high burnish on wood surfaces for oil finishes and will efficiently scuff lacquer and varnish finishes between coats. Can also be used to remove rust and prepare metal surfaces for painting. Made in wyoming, USA with components from USA and germany. Specifications: Maroon pad: Very fine grade, 360-400 grit, #00-#000 steel wool. Gray pad: Ultra fine grade, 800-1000 grit, #0000 steel wool. White pad: Polishing grade.