Doh Doh's bushings are made with the highest quality urethane of any skateboarding bushings. They are molded with rounded edge, making them more resistant to chipping. Doh Doh's are great for replacing worn out or broken bushings or for upgrading your stock bushings for a more custom feel. Doh Doh's bushings come in 5 different durometers. The durometer of these bushings are 88a, these are the softest. bushings.