AN6 6-AN Straight Push Lock Hose End Fitting/Adaptor Oil/Fuel Line Male Fitting Fitting Diameter: AN-6, Fitting Type: Straight High Performance Racing Fittings, CNC Machined Removable head for both push-on or twist-lock applications Anodized surface, high durability and strength. Application: Universal,such as: Oil/ Fuel/ Water/ Fluid/ Air Line