Bearing washers (speed rings) are thin spacers that go outside of the bearings on the axle. They provide an offset between the bearings & truck and the bearings & lock nuts. This prevents the bearing dust covers from rubbing against the trucks or axle nut to provide better spin.
These can also be used in the case of an axle that does not have enough thread to be able to properly tighten the lock nuts.
Fits 8mm axles, comes in sets of 16 for quad skates or 8 for skateboards.
(Color may vary - silver or black)