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Small, easy to handle, and does an amazing job of both inflating and delating large fenders and low-pressure inflatable items. Only inflates to 1 psi (enough for the fenders) The 20V battery last a long time. I use a 2 stage pump for inflating the items which require 6 to 15 psi of pressure but, I use this pump to deflate the high pressure toys because it is convenient.
Not sure why they designed it the way they did, but the straps should be attached to the fender. They are very difficult to attach to the piling while holding and bending the fender to fit the piling. Once installed it’s also difficult to pull the straps tight enough so it doesn’t slide down the piling. Once installed it works fine and protected our rail from scraping so if you can install it, you’ll enjoy it.