grainger sells them as well.
https://www.grainger.com/category/hardware/mounts-and-vibration-control/cylindrical-vibration-isolators?sst=4&ts_optout=true&searchQuery=rubber+isolators&categoryIndex=1
Had some time and wanted to make better use of my racks in the trailer and shop. Designed and printed these mounts for the shop.
https://www.thingiverse.com/thing:6492191
You get what you pay for... The TFL starters dont have a solenoid so all the amps go through the switch causing them to burn out. The motors themselves are also prone to burning up. Some guys get a few weekends out of one some a couple years... My shortest life was 4 starts of a .45. They denied...