WLR 50520 Flap Disc 4-1/2" X 5/8-11" 80 Grit T29 Zirconium Aluminum Backing

Aluminum backing provides rigid support for maximum aggression and is recyclable..

Self-sharpening zirconia alumina (ZA) grains hold up under high temperatures and extreme pressure..

Contaminant-free (contains less than 0.1% Fe, S, Cl)..

5/8" - 11 metal nut allows for quick spin-on, spin-off changeover and eliminates cross-threading or sticking to spindle due to heat build-up..

Best on carbon steel, structural steel, stainless steel, and cast iron..