Pack of Clouds Cosmic Conical and Barrel Blue 93a Quad Skate Bushings. Please note 1 pack will do one skate so if you want to change the bushings on a pair of skates please buy 2 packs.
The hardness of your bushings will affect how easy it is to turn the trucks on your quads. The softer the bushing the easier to turn, a harder bushing provides a more stiff ride.
These come in 6 different hardnesses