Silver Cylinder Spacer for 688 bearings

I am new to the care and feeding of the 688 bearings. I come from the OLD SCHOOL of skating. You need the speed rings for these bearings. If you order a set of 688 Race Bearings, be sure also to get the spacers. They will help keep the bearing and the wheel stable and running true without running the risk of accidentally collapsing the bearings when tightening the axle nuts.