First of all, I received this quickly, which was good after my husband accidentally let the air our of my front tire trying to pump it up with his air compressor last week. When the pump arrived yesterday, he declared it to be well-made, and he quickly figured out which chuck I needed and how to switch to the correct chuck. He showed me how to use it, and I think I can remember. Use requires some strength, but it only takes a few pumps to completely fill the tire. I was back on the road this morning!