1. If I order wrong knob ,Can I return?
2. Is it free shipping ?
Answer Hello Julie. Yes, if the knob 98006102 is wrong, you can return it. However, the return shipping is not free. Here is a link to our return policy. Hope this helps. http://www.appliancepartspros.com/customerservice/returns.aspx
What is different between part # ap 3129338 and 3129337 ?
Answer Hello Julie. 98006102 is a white knob and 98006100 is a black knob. Hope this helps.