Fixes scratched CDs, DVDs, game and data discs that will not play, skip or that freeze with a DVD or CD player Motorized repair process smoothens surface scratches to renew the disc's protective layer, leaving disc data unaffected Patented FlexiWheel repairs up to 25 discs, and works gently enough to safely repair the same disc multiple times The radial resurfacing action polishes away only the thinnest possible layer from the polycarbonate plastic coating applied on the surface of the disc. Resurfacing the disc removes the ridges created by a scratch and allow the laser to focus properly on the data track, thus eliminating playback issues. Does not work with XBOX One, PS3/4, or Wii U discs.