These are budget minded isolators for the 94-98 Dodge 12v Cummins, they pair perfectly with our K series Chevy to Cummins conversion motor mounting kit.  Using vulcanized rubber bushing inserts, they provide OEM feel and control.  If you don't need the strength, control or quality of our USA made HD 12v isolators ( https://robbonneyfab.com/hd-1994-1998-dodge-motor-mount-isolators/ ),  these are the best that China offers!  Please note that they do NOT include the rubber donuts!