-440C stainless steel balls provide maximum hardness, toughness and dimensional stability.
-440C stainless steel balls are used in a hardened condition, perform similarly to tool steels, and are suitable for antifriction bearings (rolling bearings).
-440C stainless steel balls generally have excellent resistance to mild acids, alkalis, foods, fresh water and air.
-440C balls are uses in bearings, valves, locking mechanisms, fasteners and quick-disconnect couplings.

Suitable for a range of purposes, some of the most common are listed below:
-1/8" is often used for clusters and old English-Style headsets
-1/4" is often used for rear wheels and bottom brackets
-3/16" is often used for front wheels
-5/32" is often used for headsets with pressing cups

Specification:
Material: 440C Stainless steel
Precision: G25 (+/-0.002mm)
Diameter: 5/8" (15.875mm)
Hardness: 56-58 HRC

Package Includes:
5 x Bearing Balls