ProLines DiscGuard2 clear disc sealer is a technological break through formula that adds a clear glass like coating to the data side of all disc formats. Easily buffs on and buffs off the disc making the disc more scratch resistant during handling. Enhances disc performance and playback of disc content. Kit includes 2oz. bottle for treating over 400 discs, disc gripping application base and buffing cloths. Independently Tested by The National Institute of Standards & Technology. DiscGuard2 is used by public libraries everywhere.