ZSDTRP Motorcycle Carburetor Air Mixture Adjusting Screw For 21 24 26 28 30 32 34mm Air Screw Kits Adjustable air mixture screw designed for use with carburetors on various motorcycle models.Compatible with 21mm to 34mm carburetor sizes, this air screw kit allows fine tuning of the air-fuel mixture for optimized engine performance.The set includes multiple screws to suit different carburetor configurations.Constructed for durability and precise adjustment, the screw fits standard carburetor ports and supports smooth during tuning.Easy to install and replace, it serves as a functional component for maintaining proper carburetion in two-wheel vehicles. Compatibility Disclaimer: This is an aftermarket replacement part.Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.