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: 6703, Dimensions: 17 x 23 x 4mm, ABEC: 3, Grade: 10, Seals: 2RS, Grease: Mobile HP 222, Application: Hubs, Bottom Brackets, Weight: 3.77g , .