Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Absolute piece of garbage

Could never get this pump to properly seal..Yes, I followed directions. Piece of junk. "Upgraded" to the next level of Bell pump, and it would not create any pressure in the chamber...another waste of money. Got smart and saved the receipt on that one so I can get a refund. I'll never buy a Bell product again. Their design is so simplistic, pretty hard to screw up...but they did, on both models I tried.