They're here! The Radar Halo is a brand new high-end wheel for roller derby and the result of nearly two years worth of research and design. The Halo features Radar's innovative, signature H-shaped hub. More than simply a larger core, the Halo hub is designed for optimal performance with excellent feel. The inner and outer rings of the Halo hub are oversized, which reduces the amount of urethane on the edges of the wheel. This makes it easier to perform stops and offers excellent response. The middle of the hub has room for more urethane, which offers grip, increases control and improves ride. Created specifically for modern derby, as it is played now, the Halo is a game changer.