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 upgradeBearing Code: MR 2437Dimensions: 24 x 37 x 7mmABEC: 3 Grade: 10Seals: LLBGrease: Mobile HP 222Application: Hubs Bottom BracketsWeight: 30.99g