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- 8mm
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Size Name:300000 Bearings
Standard Diameter: .315 Inches
Metric Diameter: 8mm
Grade: 25
Material: AISI 52100 Chromium Steel
Ball Weight (each): .07411 Ounces / 2.101 Grams
Chrome steel balls offer the precise geometry and fine surface finish that makes them especially useful for bicycles, casters, drawer slides, door locks and many other applications.