Enuff Swiss Bearings:
Precision Low Friction Bearings
Pre-Lubricated with Militec-1 Ultra Low Friction Oil
High precision chrome bearings
 
Enuff bearings are high-quality and long-lasting; they provide smooth rolling and fast riding. Available in ABEC5, 7 and 9 as well as Swiss and Black versions. Standard skate bearings size which will fit all wheels including Skateboards, Scooters, Inline Skates, Quad Skates.
 
'ABEC' is the rating system that referes to the frictional load/spin.  The higher the ABEC number the faster the bearing is going to be.