Flap discs OPTIMAprofi ceramic for inox and steel. These discs meet the needs of extremely demanding operations on all types of materials.Their performance is 20% higher then usual flap discs. Application: edge grinding, face grinding, ideally for weld grinding. Steel, stainless steel, non-ferrous materials, wood. Abrasive flap wheels OPTIMAceramic are composed of plates (polyester ) with ceramic grain imposed equally on artificial resin reinforced with fiberglass.