Stainless Steel Lengthen 1/8" 1/4" 3/8" 1/2" 3/4" BSP Male x Male Thread Hex Nipple Threaded Reducer Pipe Fitting
https://www.vogueparade.com/shopping/EN/200282142/1/1005003701427642/stainless-steel-lengthen-18-14-38-12-34-bsp-male-x-male-thread-hex-nipple-threaded-reducer-pipe-fitting//