The Zombie wheels from Sure-Grip use a colorful anodized aluminum hub and are available in 3 sizes to match your needs.
Low: 59mm X 38mm - Instant acceleration & increased lateral response
Mid: 62mm X 38mm - Increased lateral responseMax: 62mm X 42mm - Maximum grip & stability
89A: Purple Hub - Extra soft for polished concrete and other slippery surfaces
92A: Black Hub - Soft for coated surfaces and tile
95A: Red Hub - Firm for sticky surfaces, tracks, or soft skate courts
98A: Green Hub - Extra firm for coated floors, tracks, and soft skate courts