HIFROM(TM 35mm 42mm 48mm High Performance Air Filter for 150cc 250cc ATV Dirt Bike Quad Moped Scooter Go kart 1. This air filter fit for PZ 24 and PZ 30 carburetor 2. The inside diameter have three taypes: 42mm or 35mm or 48mm 3. The length: 145 mm 4. All products at our store are wholesale & retail 5. HIFROM focus on provide high quality air filter at fair price, Professional technical support; if you unsatisfy with our product, you can return to our USA warehouse, no risk.