The term ABEC stands for Annular Bearing Engineering Council. The higher the ABEC rating, the lower the friction and smoother and faster roll. ABEC ratings are given in odd numbers only 1,3,5,7 and 9. Most toy grade products utilize an ABEC 1 or non rated bearing.
Fits Yomega Xodus, Hyperwarp Wing, Rev Rim, Raider, Saberwing Raider, RBII, and Spintastics TigerShark. DOES NOT FIT Fireball, Powerspin, Tornado, or SBII.