Feature:1. Made of highquality aluminum, corrosion resistant durable and has long service life.2. Small and light, easy to install, ready to use, can bring you more convenience.3. Fit for Keihin FCR, KOSO, OKO, PWK, and PE of the carburetor, to better meet your needs.4. Sufficient quantity to better meet your needs, reserve some of them spare, can bring more convenience to you.5. Sophisticated production, has good workmanship, good performance, can be used for a long time.Specification:Condition: 100% Brand NewItem Type: Main Jet SetMaterial: AluminiuColor: As the Picture ShownTechnical Specifications of Main jets:1. Size same as for Keihin 99101-357 Main Jet2. Approx. 16.5mm/0.65in in length with a Approx. 6mm/0.24in Round Head3. Thread: Approx. 5x0.8mm/0.2 x 0.03in4. The length of thread: Approx. 5mm/0.2in5. Package includes 1 each of following sizes 155,158,160,162,165,168,170,172,175,178.Techinical Specifications of Pilot Jet:1. Same size as for Keihin N424-21 Pilot/Slow Jet2. Approx. 28mm/1.1in in length with a Approx. 5mm/0.2in Round Head3. The diameter of thread is Approx. 6 x 0.75mm/0.23 x 0.03in4. Package includes 1 each of following sizes 32 38 40 42 45 48 50 52 55Fitment the following carb(reference only):Aftermarket for CVK20, Aftermarket and for OEM FCR-MX,Fit for PD22, PE20, 26, 28, 30mm, for PJ34, 36, 38mm, for PWM 34, 36, 38mm,Fit for Keihin FCR, KOSO, OKO, PWK, and PE of the carburetor.Package List:10x Main Jets10x Slow Pilots