Roll line super speed race 63mm wheels 88a 8pkthe roll line super speed wheels with shockproof and crushproof hub offering a higher level of smoothness with there narrow width compared to traditional wheels a very good grip and at the same time an incredible maneuverabilitysize 27mm x 63mmdurometer 88apurpose roller derbyhub hollow corecolour white pu with chrome coresold as a pack of 8 wheels