Mr. Heater Coupling Nut Propane Grill End Fitting is designed specifically for use with propane gas grills that utilize the new Type 1 (*QCA-1) System. This fitting features a male pipe thread coupling nut with a 1/4 inch MPT connection, ensuring a secure and reliable connection for your propane setup. Its compatibility and sturdy construction make it an essential accessory for maintaining the efficiency and safety of your propane grill. Model Number: