Dryer would not turn on

The piece inside the part was cracked so I could not turn the knob and engage the dryer. I took the dial off and found the parts on PartSelect.com Their diagrams were incredibly helpful. I pulled the old knob off, snapped these two new parts together and put the knob back on....problem solved. I confess, as a woman whose husband does all the repairs in the house, I was very proud of the fact that I solved this one on my own. For $20. I saved mega $$ on a house repair call and parts replacement charge. Thank YOU!