Home » Coarse Pronto Prep Disc Pads Coarse Pronto Prep Disc Pads Specifications Non-woven material impregnated with aluminum oxide grain 2-ply cloth construction Threaded male hub Durable, resists loading Good for flat or contoured surfaces and hard to reach areas Description 2" Coarse Prep Disc Pads 3" Coarse Prep Disc Pads Item Number BB2C BB3C