Fitment:Fits most Keihin FCR & FCR-MX Carburetors,fits most common 4-stroke models (Reference fit models as following).fcr air fuel screw adjuster comes with spring, washer and O-ring, it is easy to install and replace
Easy To Adjust:Easy grip knob with laser etched numbers for simple and accurate adjustments.Carb mixture screw can easily tune and adjust your idle mixture without burning your hands or fumbling with a small screw driver
High Quality Material: This keihin fuel mixture screw is made of premium 6061-T6 aluminum,machined,anodized finishing treatment to ensure maximum strength and durability for long lasting usage,lightweight and rust-proof
High Quality Material: This keihin fuel mixture screw is made of premium 6061-T6 aluminum,machined,anodized finishing treatment to ensure maximum strength and durability for long lasting usage,lightweight and rust-proof