... 4"*72 Flap Disc Flap cutting discs for metal , Flap Disc For Metal Grinding Wheel,grinding disc cutting wheel ,cutting disc ,abrasives wheel ,abrasives disc , Flap disc for metal: ... 120#180mm * 22mm40#-600# 40#-600#40#-120#............................................................................Characteristics:Flap abrasive flap disc with fiberglass support.Grit: White aluminum oxide: WA - ...