Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Quicklee Collars

Works as advertised. Makes changing weights much faster and easier than any other type of collar out there that I know of. Well worth the price for anybody who uses olympic barbells. Would buy again. However,you must be very careful not to drop these or other collars made like them: they are easy to break with any misuse whatsoever [you've been warned].