The entry standard for Enduro bearings. Enduro’s ABEC 3 bearings offer improved quality and performance over ABEC 1 bearings fitted by many OE manufacturers. Only the finest cycling components come standard with Enduro’s ABEC 3 bearings. With hardened chromium steel races balls and tough riveted steel retainers these bearings are durable and the perfect low cost performance upgrade.Key Features:Bearing Code: 6903Dimensions: 17 x 30 x 7mmABEC: 3 Grade: 10Seals: LLBGrease: Mobile HP 222Application: Hubs Bottom BracketsWeight: 17.13g