Specification Brand : uxcell BulletPoint : Made in Japan BulletPoint1 : 608ZZ (I.D.=8mm, O.D.=22mm, Thickness=7mm) BulletPoint2 : 608zz bearings are shielded on BOTH SIDES to keep lubricant in BulletPoint3 : Chromium Steel long-life bearings, smooth and low noise BulletPoint4 : ABEC Tolerance 1 (P0), Z1 Noise Level for most general use BulletPoint5 : Static load rating of 1350 newtons and dynamic load rating of 3300 newtons Color : silver tone ExternallyAssignedProductIdentifier : 4894878089306 ExternallyAssignedProductIdentifier1 : 886527585226 ExternallyAssignedProductIdentifier2 : 882208389312 ExternallyAssignedProductIdentifier3 : 0886527585226 ExternallyAssignedProductIdentifier4 : 0882208389312 IncludedComponents : Deep Groove Ball bearing ItemName : uxcell 608ZZ Deep Groove Ball Bearing 8x22x7mm Double Shielded Chrome Steel Bearings 20-Pack ItemPackageDimensions_Height : 12.6 centimeters ItemPackageDimensions_Length : 3.2 centimeters ItemPackageDimensions_Width : 8.8 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : deep-groove-ball-bearings Manufacturer : uxcell Material : Steel ModelNumber : a18120800ux0057 NumberOfItems : 20 PackageLevel : unit PartNumber : a18120800ux0057 ProductDescription : Features: These bearings are made of high quality steel for low noise and long service life. They are rubber sealed to avoid entering and save lubricant. Bearings have a 25mm inner diameter, a 37mm outer diameter, and a 7mm thickness. These are great for small hobby 25mm shaft/rod projects. There comes total 10 pieces miniature bearings which you may use for many different projects.