Easy To Adjust: Carb mixture screw can easily tune and adjust your idle mixture without burning your hands or fumbling with a small screw driver. Numerically calibrated for tuning memory, adjust air fuel mixture with this screw easily. O-ring Desige: FCR carburetor mixture screw has an o-ring design to resist engine vibration and increase accuracy and longevity. Carburetor adjuster screw surface paint finish for enhancing its corrosion and rust resistance, not fading and rust. Perfect Compatibility: The carburetor mixture screw is perfect suitable for Honda Yamaha Suzuki(Reference fit models as following). Perfect match to your motorcycle, smooth and bright color, unique appearance. Premium Quality: This fcr carburetor air fuel mixture screw is made of premium aluminum material, sturdy, not easy to aging and abrasion resistant, to ensure maximum strength and durability for long lasting usage,and worked perfectly.. Easy Installation: Carb mixture screw adjuster comes with spring, washer and O-ring, it is easy to install and replace. Simplify installation steps, no modification, cutting, or drilling required; Size: 56 13mm/2.2 0.5in.
