At the moment, you can choose among the 12 sizes you need in these size numbers: 25- 27.5- 30- 32.5- 35- 37.5- 40- 42.5- 45- 47.5- 50- 52.5- 55- 57.5- 60- 62.5- 65 You can from these sizes, choose the size you need, and when you submit an order, stated in the remarks column size you need, I will be based on the remarks column message you send goods. If you do not specify the required size in the remarks column, then we will ship the product in the default size. The default size is: 25- 27.5- 30- 32.5- 35- 37.5- 40- 42.5- 45- 47.5- 50- 52.5, each one. In the picture, I have detailed marked part size, please carefully check the good size, and then later, to avoid buying the wrong thing, thank you. Pilot jet flow above specifications may optionally 12, as a combination, a combination of 12 Pilot jet price is $ 10.99. If you buy two or more than two or a combination, you can also get 15% discount. If the number of wholesale more, and I also can re-negotiate the price. The following is the real main jet shoot pictures: