We are selling an Eddie's Wheels Corgi Cart - Female, 3/8″ variable axle, stirrups. A-12, B-13, C-5, D-7, E- 8 1/2, 8 1/2, 7 1/4. To learn what these wheelchair measurements mean and how you can measure your canine, see: http://eddieswheels.com/p/26/A-Visual-Guide-to-Measuring-Your-Dog We are asking...