Negative Positive
Title: Loses pressure
Review: I bought two of these for my homemade press and they have seen constant use, I bought them at the same time. A year later, one is still fine but one seems to have lost it's macho, and will gradually slide downwards and I can't find anything about maintenance on these, anywhere. It mean it was cheap at walmart, but I'd hate to be changing the oil under a car and have these thing slowly descend onto my chest. Like I say, one still holds the pressure (usually just a few minutes are required for what I do, but the other 'deflates' pretty quickly. So, I wouldn't buy this brand again.
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