Helium 64mm Derby/Rec Wheels
Helium Jam Wheels are specifically designed for roller derby and jam skating, where hi-rebound and good roll are needed in combination with incredibly tight grip. This wheel has properties that are normally not achievable in the one wheel with a design based on a large rigid hub and a smaller, thinner tread. This is one of the tightest, good rolling indoor/outdoor wheels available. The hub is incredibly strong, very light, and has extremely close tolerances for roundness, trueness, and for the cage where the bearings and spacers are mounted.
Hub = Yellow, Tread = Green, 83A – 64mm
Set of 8 wheels
The yellow hubs glow very strongly under “black light”, but not as strong as the Hydrogen wheels.
It is almost always recommended to use spacers in the wheels, when using standard 7mm bearings.