This 1/4" BSP Fuel line set includes 1 hose barb fitting and 1 Chrome plated Nut. These compression hose fittings will fit the threaded fuel banjo fitting on the top of most Dellorto carbs and float bowls. They also fit lots of Italian Gas tank Petcocks that take a threaded fuel line. Hose barb will fit fuel lines from 5.5mm to 8mm when using a hose clamp. Please measure your existing part before ordering.