Brass Straight Hose Pipe Fitting Equal Barb 3mm 4mm 6mm 8mm 10mm 12mm 14mm 19mm Gas Copper Barbed Coupler Connector Adapter
https://www.vogueparade.com/shopping/EN/200282142/1/1005003164830975/brass-straight-hose-pipe-fitting-equal-barb-3mm-4mm-6mm-8mm-10mm-12mm-14mm-19mm-gas-copper-barbed-coupler-connector-adapter/