From what I can find the Cast Products female quick disconnect fitting would be compatible with the 1/4" male QD fitting on the MB Sturgis Propane Adapter Hose # 100476-120-MBS. The female 1"-20 fitting on the other end of the hose is the same type of fitting that would be on the small 1lb propane bottles and would be compatible with your Weber Q1200 as long as it has a male 1"-20 fitting. view full answer...