CD DVD BLU RAY PS3 XBOX 360 WII DISC CLEANER SCRATCH REPAIR REMOVER MACHINE This unit can return damaged disc back to readable and writable condition, though it will not erase any physical scars or scratches present. During the repairing process, there will be circular marks on the disc; this is perfectly normal condition and will not damage the disc. If the disc is faulty due to it original production, this unit will not repair it. if the disc is scratch into the inner foil layer, this unit will not repair it. Working cycle ( Buffing and Repairing ): About 4 minutes. The whole set of the pads and fluids can be used up to 50 times. If you sell DVD Disc, CDs or Gaming Disc do not purchase as mentioned above this will leave swirl marks and will not leave a perfect finish