1x Compact 1/8 NPT to 4mm 90 Degree Hose Connector for boost connections. 
 
These high quality compact 90 degree solid brass hose connectors are great for eliminating split hoses associated with using straight hose connections (the ends of straight hose tails often pierce / split hoses because of the angle that the hoses hang once installed).
 
These compact 90 degree connectors have a 1/8 NPT thread and are best suited to approx 3-4mm I/D boost hoses.
 
The very same fittings are used by Turbosmart, AEM, Haltech, Vipec, Gizzmo, Autronic etc but ours are at a fraction of the price and available from stock.