18mm Carb. Inner Diameter (Intake): 18mm Outer Diameter (Air Filter Mount): 40mm Electric Choke (Plug Style): 2-Pin Male Plug Accelerator Pump Main jet: 88 Idle jet: 31 20mm Carb. Inner Diameter (Intake): 20mm Outer Diameter (Air Filter Mount): 40mm Electric Choke (Plug Style): 2-Pin Male Plug Accelerator Pump Main jet: 91 Idle jet: 32 24mm Carb. Inner Diameter (Intake Side): 24mm Outer Diameter (Intake Side): 32mm Inner Diameter (Air Filter side): 38mm Outer Diameter(Air Filter Side): 43mm Open & Adjustable Enrichment Screw Main jet #112 Idle jet #35 30mm Carb. Includes Electric Choke, 2 Pin Male Plug Inner Diameter (Intake Side): 31mm Outer Diameter (Intake Side): 36mm Inner Diameter (Air Filter side): 43mm Outer Diameter(Air Filter Side): 47mm Open & Adjustable Enrichment Screw Pilot Jet #94 Main Jet #112 All Our Crbs. Fit: Wolf Brand Scooters, RX-50, Islander, Blaze, Blaze II, Lucky, Lucky II, Jet, Jet II, Rugby, Rugby II, EX-150, Ex-150 Sport, Striker. Also Fits Discontinued Wolf models: V-50, V-150, CF-50, and W1. May also fit other Chinese Scooters, Mopeds, ATVs, 4 Wheelers, 3 Wheelers, Motor Cross, Pit Bikes, or Other Chinese Powersports MotorCycles / Bikes, Other Brands Compatible with/Replacement for May Include: Lance, Taotao, Kimco, Honda, Kawasaki, Jonway, Peace, and ZNEN. Other Brands May Include: Lance, Taotao, Kimco, Honda, Kawasaki, Jonway, Peace, and ZNEN. Important Note: Please check part fitment and application before purchase. Although this part may fit other chinese scooters, this part is a specific fit for the Wolf Brand Scooter Model listed in the description above. Carburetor 50cc (20mm) Inner Diameter (Intake): 20mm Outer Diameter (Air Filter Mount): 40mm Electric Choke (Plug Style): 2-Pin Male Plug Accelerator Pump Main jet: 91 Idle jet: 32