This axle is designed to work with our 41mm narrow glide trees or any trees that are around 7in on center and the early style Panhead/gen shovel tapered sliders. You can use this axle with later 41mm sliders but it will require you to drill out the axle hole in the non clamping side.
This Axle is machined from stainless steel so rust is not an issue. This axle is 3/4 (.75in) diameter. The way this axle is designed you can easily turn it down to 5/8 (.625in) or any size in between. K model /early sportster hubs are 17mm (.669in) so you can turn it down to that size as well.
When you buy the trees and axle at the same time a discount will appear at check out.