Product Name:wool flap disc Size:4-7inch Density:0.25-0.90g/cm3 MOQ:500pcs Surface Grinding Wheel Usage:Polishing Metal/ Composites/ Hard Woods/Glass Surface Felt Flap Discs are manufactured from high quality special felt and are designed for final polishing applications to achieve a mirror finish. Made of felt, they are flexible and can prevent overheating. Felt Flap Discs should be used with polishing pastes for maximizing efficiency when pre-polishing and high-gloss polishing of medium to large surface areas. Ideal for work on irregular or contoured surfaces.