1" tube available in 9" outside to outside - or 8" outside to outside 7/8" tube only available in 8" outside to outside. All are about 26" long
You can spread the hoop open or closed a bit to fit your project by standing on one side and pulling the other (if you're strong enough), or putting it in a vise and prying it open or closed with another piece of tubing for leverage.
These hoops are designed to replace your stock top frame tubes - you can cut the excess off the front, bend them up, in, out whatever you need for your custom project.
Universal hoops are a "starting point" for your build only. May need to be cut, bent, modified etc.. to fit your project.