Marine Boat Universal 5/16inch 8mm Fuel Gas Hose Line with Primer Bulb - For introducing fuel into the fuel pump after replacement of the fuel filter. - One-way only function. - Connects to any length of hose, easy to use. - Bulb engineered to maintain flexibility and prevent collapse in hot and cold temperatures - Fitment : Suitable for cars,motorcycles,Boats, RVs, Tractors, and Caravans. Specification: - Material: Rubber and Metal - Color: Black - Total Length: Approx. 200cm/ 78.74 inch / 6 feet - Interface diameter: 8mm/ 5/16 inch - Inner diameter: 5.6mm/ 0.22inch Package Includes: 1 Piece Fuel Line Assembly Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please check the size measurement and the picture carefully before making payment. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand,Thank you.