Broken "start" knob

The start knob had crack in it that was getting bigger, and we'd begun using pliers to start it. Not only was it unwieldy but I thought it would eventually strip the metal stem. Of course this was a breeze of a repair--we just slid the new knob on. But my husband had been certain that finding a replacement knob--or calling a dealing and ordering the part--would be a big deal. I said: "But let's just try on-line." We quickly found the model # inside the dryer door. We filled in the appliance info, the part popped up. I ordered it. It arrived in 2 days. It's like new.