Enduro BK-5055 1/4" (0.25") Grade 5 Steel Balls - 50 Pieces
Enduro provides the loose balls necessary for completing bike repairs since loose ball bike parts are still readily available.
Grade 5 balls boast exceptional roundness, surpassing the 5/1,000,000" tolerance of sphericity. Achieving such precision is remarkable, as most steel races cannot even be ground to match this level. These balls are identical to those found in Enduro ABEC-5 bearings. Just a few years ago, Grade 25 would have been considered a top-tier ball, reserved for only the finest hubs and bottom brackets. However, today, Enduro's entry-level ABEC-3 bearings are outfitted with Grade 10 balls, with Grade 5 or Grade 3 options available as you move up in both price and performance.
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