Specification Brand : uxcell BulletPoint1 : 1/2" (12.7mm) in diameter BulletPoint2 : Helps prevent marring the coin surface BulletPoint3 : G0-G3 precision grade balls, Self-lubricating BulletPoint4 : Excellent strength, high toughness and wear resistance BulletPoint5 : Package includes 50 piece balls Color : silver tone ExternallyAssignedProductIdentifier : 4894878062521 ExternallyAssignedProductIdentifier1 : 823556011456 ExternallyAssignedProductIdentifier2 : 0823556011456 IncludedComponents : Precision Balls ItemDisplayDimensions_Length : 35 millimeters ItemDisplayWeight : 0.29 kilograms ItemName : uxcell 1/2-inch POM Coin Ring Making Balls, Plastic Bearing Ball 50pcs ItemPackageDimensions_Height : 14.3 centimeters ItemPackageDimensions_Length : 3.9 centimeters ItemPackageDimensions_Width : 12.2 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : deep-groove-ball-bearings Manufacturer : uxcell Material : Plastic ModelNumber : a19042300ux0259 NumberOfItems : 50 PackageLevel : unit PartNumber : a19042300ux0259 ProductDescription : Description:Single-row, pre-lubricated, normal accuracy. They are used to accommodate radial and axial loads in both directions(Mainly bear radial load, but also can bear a certain amount of axial load). It is constructed using chrome steel material, and its sealing type features a metal cover. With high-speed capabilities, low friction, and minimal noise levels, this bearing ensures optimal performance. This type of bearing is used in industries such as precision instruments, low-noise motors and general machinery, and is the most widely used type of bearing in the machinery industry. Selecting Guide: Open Type (No Designation Suffix) - Suitable for high-speed and even very high-speed operation. Shielded (Designation Suffix Z/ZZ) - High speed. Protect from dirt and debris. Sealed (Designation Suffix RS/2RS) - Made of sheet steel reinforced nitrile butadiene rubber (oil- and liquid-resistant). Lower limit speed than metal shield bearings.