This listing is for 1 Aluminum Carb Tee for Honda Keihin Carbs . Replaces those hard to find leaky and broken plastic oem ones (part # 16024-MZ2-E00) shown in picture for reference only . Measures 42.1mm overall length. These are precision machined from solid aluminum and include replaceable o-rings. Measurements taken directly from OEM part. Check out my other listings. Made 100% in USA