Check the listing for details. 10 Pcs 4-1/2" Scour Flap Discs 120 & 240 Grit Sanding Discs for Angle Grinder. Condition: New, Made in United States. Listed at 17.78 USD. Feature:Scouring Specialist: Polishing Flap Disc consists of more than 60 small square "scour pads" that remove rust, oxides and corrosion without harming the metal surface. It also brightens metal, restoring its luster and colorSoft Nylon Fiber: Scour flap discs is crafted from premium nylon fiber, the different grit levels depend on the thickness and tightness of the fibers, upgraded thickness and width ensuring strength and durability, extending its lifetime by 50%Bevel Type 27: Bevel Type 27 angle flat design makes flat and undulating sanding much more convenient, great for surface preparation, and working on welded seams at a working angle of 0°Multi Application: 180 Coarser grit for heavier rust and paint removal. 320 Medium grit for gene.