Specification Brand : Small Parts BulletPoint1 : Corrosion resistant BulletPoint2 : Sphericity: 0.0006 millimeters BulletPoint3 : Perform well in high wear and abrasion applications BulletPoint4 : Use for bearings and valve parts BulletPoint5 : Rockwell C: 58-65 GradeRating : 440C ItemName : Stainless Steel 440C Ball, Grade 25, 6mm Diameter (Pack of 100) ItemPackageDimensions_Height : 0.635 centimeters ItemPackageDimensions_Length : 12.7 centimeters ItemPackageDimensions_Width : 7.62 centimeters ItemPackageQuantity : 100 ItemShape : Ball ItemTypeKeyword : stainless-steel-spheres Manufacturer : Small Parts Material : Stainless Steel NumberOfItems : 100 PartNumber : B4X-M06-C ProductDescription : Description These ceramic bearing balls are good for applications that require extreme rotation and require high performance bearing balls to meet the requirements. Lighter and stronger than tungsten carbide, these silicon nitride balls are diamond polished and will not shatter or melt under extreme conditions. Higher hardness than chrome steel balls. Vickers-hardness up to 1700HV. Widely useful for casters, drawer slides, bicycle hub, door locks, and more.