i dont have any for sale. I like to make sure i have plenty of various sizes as i have 6 gas motors so that way I can find what works best for my needs/per the airframe. The numbers should be in the 6300-6800 range depending on your set-up and motor condition/exhaust..... The B pulls very hard even at lower rpms the 26A is for all out 3d or a very heavy airframe......