Specification Brand : Small Parts BulletPoint1 : Grade: 100 BulletPoint2 : Sphericity: 0.0025mm BulletPoint3 : Specific Gravity: 7.916 BulletPoint4 : Rockwell C: 25-39 Non-annealed BulletPoint5 : Good Corrosion Resistance GradeRating : 302 ItemName : Stainless Steel 302 Ball, Grade 100, 1mm Diameter (Pack of 100) ItemPackageDimensions_Height : 0.254 centimeters ItemPackageDimensions_Length : 8.89 centimeters ItemPackageDimensions_Width : 7.62 centimeters ItemPackageQuantity : 100 ItemShape : Ball ItemTypeKeyword : stainless-steel-spheres Manufacturer : Small Parts Material : Stainless Steel NumberOfItems : 100 PartNumber : BX-M01-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.