Specification Brand : uxcell BulletPoint1 : 1/4" (6.35mm) in diameter BulletPoint2 : Smooth surface, G5 precision grade balls, Self-lubricating BulletPoint3 : Higher hardness and wear resistance than chrome steel balls BulletPoint4 : Excellent corrosion resistance. Stable and Lightweight BulletPoint5 : Package includes 10 piece balls ExternallyAssignedProductIdentifier : 7082152350526 ItemName : uxcell 1/4 Inch Ceramic Bearing Balls, Si3N4 Silicon Nitride Ball G5 Precision 10pcs ItemPackageDimensions_Height : 13.8 centimeters ItemPackageDimensions_Length : 1.8 centimeters ItemPackageDimensions_Width : 9.4 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : deep-groove-ball-bearings Manufacturer : uxcell Material : Ceramic,Silicon,Steel ModelNumber : a19092400ux0293 NumberOfItems : 1 PartNumber : a19092400ux0293 ProductDescription : Description: -These ceramic bearing balls are great for applications were there will be extreme rotation and a premium performance bearing ball is required to meet the demands. -Lighter and stronger than tungsten carbide, these silicon nitride balls are diamond polished, will not shatter or melt in the extreme conditions. -Higher hardness than chrome steel balls. Vickers hardness up to 1700HV. -Specially useful for casters, drawer slides, door locks and many other applications.
Suitable for a range of purposes, some of the most common are listed below: -1/8" is often used for clusters and old English-style headsets -1/4" is often used for rear wheels and bottom brackets -3/16" is often used for front wheels -5/32" is often used for headsets with pressing cups