Automatic choke:included Inner Diameter (intake side):24mm Outer Diameter (intake side): 32mm Inner Diameter (air filter side): 38mm Outer Diameter(air filter side): 42mm Product description Size: Automatic choke:included Inner Diameter (intake side):24mm Outer Diameter (intake side): 32mm Inner Diameter (air filter side): 38mm Outer Diameter(air filter side): 42mm Fitment: It fits almost all the4 strokeGY6 110cc, 125CC and 150CC ATVs, Go Karts and Scooters. This Chinese part fits most makes and models of Chinese Scooters and Mopeds with 125cc – 150cc 4-stroke GY6 QMJ/QMI157, QMJ/QMI152engine. This may also fit some of the model for Yamaha, for Suzuki, for Kawasaki and for Vespa for scooters. Package includes: 1 x Carburetor