Specification Brand : uxcell BulletPoint1 : The hole diameter of the item is up to standard,which is good for application. BulletPoint2 : Good anti-corrosion function helps prevent rust during transportation and storage process. BulletPoint3 : Low friction resistance and high speed features,a good choice for you. BulletPoint4 : The bearing well lubricated can runs smoothly and efficiently. BulletPoint5 : Inner Diameter:20mm / 0.79"(ID);Outer Diameter:42mm / 1.65"(OD);Thickness:12mm / 0.47"(T);Package Content:2 x Deep Groove Ball Bearing. Color : silver tone, red ExternallyAssignedProductIdentifier : 4894878063375 IncludedComponents : Deep Groove Ball Bearing ItemName : uxcell 2pcs 6004RS 42mm x 20mm x 12mm Double Sealed Deep Groove Ball Bearing for Automotive ItemPackageDimensions_Height : 13.5 centimeters ItemPackageDimensions_Length : 1.8 centimeters ItemPackageDimensions_Width : 8.8 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : deep-groove-ball-bearings Manufacturer : uxcell Material : Alloy Steel ModelNumber : a18092600ux0003 NumberOfItems : 2 PackageLevel : unit PartNumber : a18092600ux0003 ProductDescription : 608ZZ Miniature Deep Groove Ball Bearings Skateboard Bearings Dust Proof Double Galvanized Iron Cover 8mm x 22mm x7mm for Fitness Equipment Electrical Motors ProductSiteLaunchDate : 2018-11-26T12:01:08.976Z Size : 42mmx20mmx12mm SpecificationMet : Ul SupplierDeclaredDgHzRegulation : not_applicable UnspscCode : 26111500