I make mine out of 2 inch nylon round stock on the lathe. Worked well and added some resilience when tightening down.



1947 GMC Truck 5 window, Long Bed
2008 Corvette Roadster
2008 Harley Davidson FXDL
2011 F150 Ecoboost 4X4
2015 Subaru Outback AWD
"only the strong survive"