Specification Brand : uxcell BulletPoint1 : Measure 14mm diameter load ball with load rating up to 22lbs BulletPoint2 : The units allow for 360º movement to provide optimal versatility BulletPoint3 : Units available in plated carbon steel to provide corrosion resistance BulletPoint4 : Provides adequate non-linear support for warehouse carton rolling platform, roller tables and other applications BulletPoint5 : According to different load bearing requirements, you can use ball transfers unit with different load bearing capacities or change distribution density ExternallyAssignedProductIdentifier1 : 702105234921 ExternallyAssignedProductIdentifier2 : 0702105234921 ExternallyAssignedProductIdentifier3 : 00702105234921 ItemName : uxcell Ball Transfers Unit 14mm Dia Carbon Steel Flange Mounted Conveyor Roller Bearings 5pcs ItemPackageDimensions_Height : 15 centimeters ItemPackageDimensions_Length : 2 centimeters ItemPackageDimensions_Width : 10 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : flange-block-bearings Manufacturer : uxcell Material : Carbon Steel ModelNumber : a14031900ux0354 PartNumber : a14031900ux0354 ProductDescription : Features a 360 degree swivel mounting plate attached to a double wheel roller system. Ball Transfer Unit is perfect replacement for your broken one on your office chair.