⊙Convenient Installation: Install this motorcycle carburetor air adjusting screw for quick and effortless tuning without any tools needed. Achieve a precise air-fuels mix and enjoy a smoother ride. Compatible with various motorcycle models for your convenience. ⊙Optimized Fuels Delivery: Our motorcycle carburetor air adjusting screw precisely adjusts fuels mixture for maximum efficiency. Say goodbye to idling oil spitting and emissions, and enjoy a cleaner, high-performing ride. ⊙Easy to Handle: Our motorcycle carburetor air adjusting screw features a knurled edge design for an easy grip and smooth operation. Fine-tune the air-fuels mixture effortlessly with a single turn of the screw. ⊙Achieve Optimum Fuels Efficiency: Thanks to the fine workmanship and precise tip of our Motorcycle Carburetor Air Adjusting Screw, your engine can achieve maximum fuels efficiency by adjusting air-fuels mixture with ease. ⊙Universal Design: Equipped with brass screws, springs, and washers, this carburetor air adjusting screw provides precise control over air and fuels mixture. Ideal for use in CV40, CVK34/36/40 carburetors.