PHOENIX HILO 110mm 100mm DD Medium 8 pack fit decode Here are your setup choices Built for high speed Here are your setup choices without the suspension system built in: Flat (no suspension): Bearing bosses rockered UP Max 60 mm wheels Bearing bosses rockered DOWN Max 65mm wheels Antirocker Freestyle (no suspension): Bearing bosses rockered UP Max 60 mm wheels Bearing bosses rockered DOWN Max 65mm wheels Antirocker Freestyle (no suspension with a recess in soulplates): Bearing bosses rockered UP – Max 65mm wheels Bearing bosses rockered DOWN – Max 72mm wheels Kizer SuperFluid Groundbreaking Grinding Material Back in the year 2000 This innovation further secures and supports your foot while enhancing overall comfort At the core is the optimized Phoenix race hub offering responsive energy transfer and stability at high velocities