Easy to replace Affordable repair item Nominal 36″ long Perfect size for most 50cc to 80cc gas engines Use on ATVs, dirt bikes, dune buggies, go-karts, & scooters Black or clear pink options Fuel line/gas line hose for scooters, ATVs, dirt bikes, mini bikes, & go-karts This fuel hose is 5 mm inner diameter x 8 mm outer diameter fuel line hose, and is typically used on Chinese built 50cc GY6 139QMB engines Fuel line/gas line hose for scooters, ATVs, dirt bikes, mini bikes, go-karts. This fuel hose is 5 mm inner diameter x 8 mm outer diameter fuel line hose, and is typically used on Chinese built 50cc GY6 139QMB engines. Will fit many other sizes and applications of scooters and power sports vehicles. Note: This hose is sold in nominal 3 foot (36″) lengths. The actual linear measurements may run from 35-1/4″ to 36-1/2″. Nominal hose length: 3 feet (35-1/4″ – 36-1/2″) Internal diameter: 3/16″ (5 mm) Outside diameter: 5/16″ (8 mm)