Air/Fuel Mixture Screw Adjuster Keihin FCR Carb For KTM Honda Yamaha Kawasaki Suzuki Red Condition: 100% Brand New . Color: Red Qty: 1x Fuel Mixture Screw . Material: 6061-T6 Aluminum Precision CNC machined screw for Keihin FCR carburetors O-ring design secures adjustment setting . Numerically calibrated for tuning memory Comes with spring, washer and O-ring .Anodized finishing