Fork Stem Mount Spacer

Do you have a motorcycle and want to install a phone mount to the fork stem nut but the hole is a little too big for the phone mount expander? This spacer will help. The OD is 28.50mm and expands to for a tight fitment. This should work on stem nut holes with ID of 28.50-30.50mm. Personally using one of a 2017 Honda CBR1000rr Fireblade. Recommend using non-dissolvable flexible filament but PLA has worked fine for my application.