Dear Mr.my inquiry is for The CNG low pressure hose assembly this part consisted of the following components :1- rubber hose ECE R110 CLASS 12- 2 piece ( Welding con( nipple)3- 2 piece swaging part4- in one side of assembly is bent steel tube5- and other side is straight steel tube6-2 piece coupling nutplease if possible contact us for send more information ( 2D drawing ) for you.This product is only suitable for CNG vehicle and for transfer the low pressure gas CNG from regulator of pressure to fuel rail kit in automotive.Best regardsThanks.