This Jet kit includes 1 new "Trick" GX140 emulsion tube and 2 new nozzles (0.036 inch and 0.037 inch). The tubes/nozzles fit Honda GX140, GX160 (5.5hp), GX200 (6.5hp) and all similar clone engines ( 5.5hp and 6.5hp). Similar clone engines include the Ducar, Predator 212cc, Lifan and Launtop. If your engine is running poorly, or at half choke after upgrading your air and exhaust filter, this kit will most likely solve the problem. This e-tube has a slightly larger main bore and fewer holes air bleeding, providing a better fuel signal. This e-tube improves performance through the rpm range. Throttle response is better from the low end and mid-range. Try a smaller jet first! Name: Carburetor Jet Kit Size: Emulsion Tube: 2.8x0.6cm/ 1.1x0.24in; 0.8 x 0.7cm/ 0.31 x 0.28 inch Material: Copper Color: Gold Package Contents: 1 x Carburetor Set Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing . The measurement error is +/- 1-3cm.