Goodbye to Big or Heavy Tanks: The 1/4" male quick connect plug can directly connected RV's propane syste (Need with 1/4" female quick disconnect output). The propane hose other end can be directly connected your appliance, eliminating the hassle of lugging around heavy propane tanks. Quick connect propane hose for rv to grill can saves you money and more convenient. 3/8" Female Flare Nuts Fit: The 1/4" propane hose with 3/8" female flare nuts fit appliance with 3/8" male flare (5/8" -18 UNF Male Thread). Such as for weber grill, Blackstone 28/ 36" Griddle, Char-Broil grill, camper stoves, camp fire Pit, fire bowl, heater. (Please make sure that the connector of your appliance is 3/8" male flare or 5/8" -18 UNF Male Thread, the outer diameter is about 0.625 inch.) Easy Installation: The 1/4” propane hose with quick connect fittings, the 1/4" Male Plug into the 1/4" quick connect adapter on your RV, and use the elbow adapter can quick connect the Blackstone 17 and 22 inch grills. Elbow Adapter Fit: The Elbow Adapter Fit only fit Blackstone 17" and 22" Griddle. The Propane Quick Connect Hose can Direct connection for Blackstone 28" and 36" Griddle. (RV's propane syste output need Regulator) Quality service: If you don’t like our product or they are not what you want, please don’t rush to leave a comment, contact us as soon as possible, we will return the product or compensate you in full, the highest customer satisfaction and experience is our unlimited pursuit. 1