WFB™ (World's Fastest Bushings) compoundInternally lubricated for smooth, fast, low-friction transitions in any competitive discipline. Hints in choosing Hardness:They feel softer compared with similar durometer of other brands (e.g. Bloodorange, Venom, etc.) , so normally people pick greater duros than those they used to ride on.
.975" Dia x .60" High (24.77mm Dia x 15.24mm High). Custom urethane blend for ultra-performance and sweet rebound.