Things I liked:This hand pump is perfect for what it was made for. It's simple and the flexible hose is a must-have. I also use it to fill a HPA tank for paintball. Things I would have changed:Sometimes I'm afraid I might break the base that I stand on. If it folded, like the previous reviews suggest, then it may be able to pivot while pumping. What others should know:Make sure you're traveling straight up and down while pumping it. Remember to let it cool down when it gets warm. If it is being used in cold weather then it doesn't get warm at all, but you also have to remember not to fill it up to the max pressure in cold weather. If a pressurized reservior is taken into warmer tempuratures then the cold air will expand and it could exceed max pressure.