Specification Brand : Akozon BulletPoint1 : Sturdy and Durable : These miniature bearings are made of high quality bearing steel for low noise, more wear-resistant, with waterproof and rust-proof function, long service life - roulement a bille BulletPoint2 : Size : Deep groove ball bearing have a 8mm inner diameter, a 16mm outer diameter, and a 5mm thickness. Ball bearings of this size are ideal for precision work and applications that require a lot of functional mechanical parts. - roulement 16x8x5 BulletPoint3 : Professional Design : These double shielded bearing has double shield to avoid contaminants entering and save lubricant - roulement a bille BulletPoint4 : Widely Use : These are great for 8mm shaft/rod projects such as mechanical equipment, electrical instruments, toys, doors and windows, hand spinner, cooling fan - bearings 8mm BulletPoint5 : 10Pcs : There comes total 10 pieces miniature bearings which you may use for many different projects - miniature bearing 3mm ExternallyAssignedProductIdentifier1 : 719855823381 ExternallyAssignedProductIdentifier2 : 0719855823381 ItemName : 688ZZ Ball Bearing 8mm x 16mm x 5mm Double Shielded 688ZZ Deep Groove Ball Bearings Metal Miniature Ball Bearings ItemPackageDimensions_Height : 9.4 centimeters ItemPackageDimensions_Length : 2.5 centimeters ItemPackageDimensions_Width : 6.3 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : deep-groove-ball-bearings Manufacturer : Akozon Material : Alloy Steel ModelNumber : Akozontyqgrzunsc PartNumber : Akozontyqgrzunsc ProductDescription : Specifications: Material: Bearing steel Inner Diameter: 8mm / 0.31" Outer Diameter: 16mm / 0.63" Thickness: 5mm / 0.19" Quantity: 10pcs