Shake Junt Bearings Low RiderShake Junt Low Rider Bearing Quantity Set of 8 Bearings Type ABEC 3 ABEC 3 The ABEC scale is essentially a measurement of bearing tolerance for high precision bearings as dictated by the Annular Bearing Engineering Committee (ABEC). The scale runs from ABEC 1 through ABEC 9 using odd integers only. Essentially, the higher up on the scale a bearing is rated the tighter the tolerance is. Tighter bearing tolerance means that the bearing moves with less