The Race Reds skateboard bearings from Bones Bearings have been newly upgraded with higher quality bearing steel and precision ground, built-in spacers to ensure perfect spacing between the bearings. The precision ground extended race eliminates the need for speed washers by improving bearing alignment when the axle nut is tightened. Bones also added a groove on the inside of the bearings' inner race that allows you to use the Bones Bearing tool to easily insert and remove the bearing, even on hub wheels.
Skate Rated™ - Skate Rated bearings are engineered and tested by Bones Wheels to withstand the high impacts of hard landings and the high side loads of turning. These bearings roll faster and last longer than bearings that use the ABEC rating system. To give Skate Rated bearings an ABEC rating would ignore all the improvements Bones has made over the industry standard. Skate Rated bearings are specifically designed for skateboarding, not electric motors.
Built-in Spacers - Built-in spacers allow you to tighten the axle all the way to ensure the bearings stay parallel in the wheel.