CENTURY'S NYLON ABRASIVE BRUSHES FEATURE ALUMINUM OXIDE IMPREGNATED NYLON BRISTLES HOLD THEIR SHAPE BETTER THAN STANDARD WIRE BRUSHES. NYLON BRUSHES WILL NOT SPARK SAFER AROUND FLAMMABLE SUBSTRATES. MORE APPLICATIONS THAN WIRE BRUSHES. METAL REMOVAL OF PAINT CORROSION AND RUST PREPARE SURFACES FOR PRIMERS AND PAINTS. WOOD REMOVAL OF PAINT AND FINISHES ON WOOD CLEAN AND SAND WOOD TURNINGS AND TRIM. PLASTIC PREPARE PLASTIC FIBERGLASS AND RUBBER FOR ADHESIVES. MASONRY CLEAN UNFINISHED TILE STONE AND BRICK MORTAR. ALUMINUM OXIDE IMPREGNATED NYLON BRISTLES HOLD THEIR SHAPE BETTER THAN STANDARD WIRE BRUSHES. NYLON BRUSHES WILL NOT SPARK - SAFER AROUND FLAMMABLE SUBSTRATES. MORE APPLICATIONS THAN WIRE BRUSHES INCLUDING METAL WOOD PLASTIC AND MASONRY. FOR BLENDING AND ROUNDING EDGES ENDS AND TRIM WORK. 1/4"" QUICK CHANGE SHANK.