Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Don't expect too much

I'd say you've got a 50-50 chance at repairing damaged discs with this item. I've only used it on audio CD's, and I've gotten results ranging from nothing (even after several uses) to restoring previously unplayable discs. It's paid for itself thanks to my excessive collection of damaged discs, but I wouldn't rely on it.