HiLo set includes 4 76mm and 4 80mm Wheels. The Addiction is Labeda's newest wheel. It will revolutionize the future of inline hockey wheels. Indoor wheels designed for tile surfaces with an outer urethane hardness between 83-86A. That is not a misprint! Indoor wheels with a outer urethane hardness as most outdoor wheels but gripper than the softest wheels available. What does that mean? Wheels that will grip and wear like nothing you have ever seen before. This Addiction is one wheel you cannot stop using.