Standard Diameter: 2-1/2" / 2.5 Inches

Metric Diameter: 63.5mm

Grade: 100

Material: AISI 52100 Chromium Steel

Ball Weight (each): 2.315 Pounds / 1.05 Kilograms

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.