This is a decent hand pump. It has helped pump up a few balls already, and feels easy to use for its design. The right angle head is clever, but the long gray tab for locking on a valve isn't ideal. The mounting bracket assumes you have threaded holes on your bike frame for mounting, which my older bike does NOT. Providing a single piece bracket and two screws was not sufficient, but thankfully a pair of zip ties worked instead for mounting it to mine. I'm also entertained that it is "porteable," yes it's greatly portable, can be fixed on the frame