Bearing spacers fit between the bearings on the axle inside the wheel. Sold in sets of 8 to accommodate a pair of skates. 7mm and 8mm available.
Bearing spacers sit between the inside and outside bearings of roller skates. Their function allows the skater to tighten down the roller skate axle nut without sacrificing spin. This is because the spacers keep the bearings seperated and true by exerting internal pressure against the external pressure of the axle nut. This protects your bearings and ensures longevity. "