ILQ-7"s go beyond ABEC rating in terms of performance, durability, design, and materials. Since ABEC only measures precision tolerance, ABEC-7 bearings can be made out of inferior steel as long as they are accurate enough. The all-new 6-ball ILQ-7 has only one standard: the best. ILQ-7 considers precision tolerance plus other variables like design features, lubrication, and quality of materials.