Made using white delrin material. these bushing are cnc machined to give a super good fit to the pillar ball. This material is very hard and should
last the life of the car. The injected plastic bushing will over time wear a flat spot on the top of the bushing and cause you to have to adjust the
clearance of the balls. As time goes on the injected plastic bushings can bind up and we have seen this more than a few times actually back out the ratainer nut.