1,1/2" ID x 3/8"OD, 22" stainless steel flexible gas connector with 1/2" Female Flare on both end 2,The kit includes 3 different couplings,1/2" male Flare x 1/2" NPT, 1/2" male flare x 3/8" male NPT, 1/2" male flare x 3/8" female NPT. 3,Ball gas control valve: 1/2"NPT X 1/2" male flare fitting. 4, Flexible gas pipe made of 304 Stainless steel durable. 5,Suitable for High BTU Rating Gas Burner, Fireplace, Systems. .