My 20 year old washer needed a knob because the old one broke and it was almost impossible to start it. I ordered what I thought was the right one but didn't read the description carefully. The knob didn't work, so I called the company and their return process was simple. I re-ordered the right knob, watched the video and installed it. It was about a fourth of the cost of the one I thought I needed, and it installed in about 2 minutes and works great!