Featuresdiameter 54mmwidth 34mmcontact patch 185mmcore duo designsold as a pack of 4 bearings sold separatelymaterialsouter wheel 95a polyurethanecore 78dpile on the pressure with the tufcore skateboard wheels from the agency constructed with a duo core design at the center these well built wheels will ensure that the advantages continue to stack up put the final piece in place by making sure to pick up a pack today