New (1) 1-5/16" chrome steel bearing ball, grade 25,

What is for sale: New (1) 1-5/16" chrome steel bearing ball, grade 25,

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1.3125" Chrome Steel Ball Bearing
BRAND NEW chrome steel ball bearing. MADE IN THE USA. These balls are Grade 25. This means that they must be round or spherical within 25 millionths (.000025) of an inch . They are made of AISI 52100 Chrome Alloy Steel that offers high hardness and excellent resistance to wear and deformation. They have a tensile strength of 325,000 psi. This is the finest bearing quality steel. 52100 material is specified by precision bearing manufacturers where precise spherical and tolerance accuracy are required.