T X Y U Type Tube Barb 4mm 6mm 8mm 10mm 12mm Copper Barbed Connector Joint Coupler Adapter Brass Splicer Pipe Fittings - China Brass Fittings, Brass Fitting | Made-in-China.com
End Feed Reducer - 8mm x 6mm Copper | Pipe Fittings - 7178
Straight Compression fitting For 8mm Copper Gas Pipe – Camper Interiors