Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Worst Tire Inflator Ever
Review: Two things ruin this device:1. The 300 PSI gauge. This means your window of interest (30-40 PSI) is about 2 millimeters in size and two tick marks. So you have no granularity for reading the tire pressure.2. The valve stem clamp is a hard plastic. The first time I used it, the plastic formed to the stem threads and then wouldn't come off. I had to really muscle it off, with the tire's air escaping the whole time.I recommend finding a different one.
