That's probably the most durable cupholder I've saw and you did a great job of attaching it.
With that said, I've saw several threads about a cupholder install on a tractor. I am always curious what you guys do with your tractors that would allow you to take time to drink anything that might fit into the cupholder?? Secondly,,, what do you do with your tractors that would be so gentle as to not cause your favorite drink to subesquently be all over your fender and you?? I'm not criticizing, just an honest and serious observation.