This 42 Draft Designs PCV 90° Fitting is designed specifically for VW vehicles. This fitting is used to make tight turns in your oil catch can PCV tubing. Agressive barbs hold 3/4" ID tubing tight. Hose clamps are recommended but not required. This fitting is injection molded from a glass filled nylon polymer - the same material VW uses to make their plastic coolant, fuel, and PCV fittings. This fitting is tough, oil resistant, and black! *Sold individually.