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.Bearing Code: MR 17287,Dimensions: 17mm x 28mm x 7mm,ABEC: 3,Grade: 10,Seals: LLB,Grease: Kyodo Yushi PS-2,Application: Hubs, Bottom Brackets,Weight: 13.59g..