Specification Brand : EVGATSAUTO BulletPoint1 : EXQUISITE DESIGN: They are double shielded to avoid contaminants entering and save lubricant Bearings have a 3mm inner diameter, a 8mm outer diameter, and a 4mm thickness BulletPoint2 : EXQUISITE DESIGN: They are double shielded to avoid contaminants entering and save lubricant Bearings have a 3mm inner diameter, a 8mm outer diameter, and a 4mm thickness BulletPoint3 : HIGH QUALITY MATERIALS:These miniature bearings are made of high quality bearing steel for low noise and long service life BulletPoint4 : WIDE RANGE OF APPLICATIONS:These are great for small hobby 3mm shaft/rod projects such as 3D printer, quadcopter or ship model BulletPoint5 : 10 PIECES BALL BEARINGS:There comes total 10 pieces miniature bearings which you may use for many different projects BulletPoint6 : Buy it Confidence: Let you feel using, so you have a better using experience. Great value for money. If you have any problems, please fell to us anytime. Our team will help you solve the problem as soon as possible. Color : silver tone ExternallyAssignedProductIdentifier : 4894878091972 ExternallyAssignedProductIdentifier1 : 841339007465 ExternallyAssignedProductIdentifier2 : 0841339007465 IncludedComponents : Deep-Groove Ball bearing ItemDisplayDimensions_Length : 30 millimeters ItemDisplayWeight : 0.21 kilograms ItemName : Mini Rollers Bearing, 10pcs Mini Ball Bearings 693ZZ Small Double Shielded Bearing Replacement Parts 3 * 8 * 4mm ItemPackageDimensions_Height : 7.1882 centimeters ItemPackageDimensions_Length : 1.4986 centimeters ItemPackageDimensions_Width : 4.9022 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : deep-groove-ball-bearings Manufacturer : EVGATSAUTO Material : Steel ModelNumber : a21073000ux0070 NumberOfItems : 1 PackageLevel : unit PartNumber : EVGATSAUTO1qgwv5tbyh1849 ProductDescription : Description: Miniature ball bearings are available ball bearings of quite small size. These miniature ball bearings have a 3mm inner diameter, a 8mm outer diameter, and a 4mm thickness. Ball bearings of this size are ideal for precision work and applications that require a lot of functional mechanical parts in a small space, such as 3D printer, quadcopter or model.