Uxcell 4Mm Ceramic Bearing Balls, Si3N4 Silicon Nitride Ball G5 Precision 5Pcs

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 and will not to shatter or melt in the most extreme conditions.-Higher hardness than chrome steel balls. 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 Specification:Precision: G5Material: Silicon Nitride (Si3N4)