This set will convert Dura Ace hubs to fit perfectly on a 110mm spaced keirin frame. Included are the axles you need for the conversion and the optional nuts (for an additional cost). The complete set is designed to convert Dura Ace brand hubs, but if you mix and match your existing parts and the shaft and washers from this kit, you may be able to convert many types of hubs, such as Suntour, Suzue and Sansin. The shaft can be used for any type of conversion, so for example, I have converted many disk wheels to 110mm using the Dura Ace kit. The cone nuts are generally only able to be used with Dura Ace hubs, however, so please keep that in mind. This is a special order item, and sometimes can take 2-3 days to restock before shipping. Please note that shipping may take a few days more than expected.