You will also find some ILQ and SG rated bearings. These types that have nothing to do with the ABEC scale. ILQ is a label from Twincam and is manufactured in two versions, ILQ-7 and ILQ-9. Bearings marked SG are used by Rollerblades and each type is rated like ABEC, i.e. 1-9. The higher the number, the better, but it this rating has no relevance to the ABEC rating.