Specification Brand : Wisoqu BulletPoint1 : Premium Material - These bearings are made of steel for low noise and long service life. BulletPoint2 : Rubber Sealed - They are rubber sealed to avoid contaminants entering and save lubricant. BulletPoint3 : Item Dimension - Bearings have a 5mm inner diameter, a 16mm outer diameter, and a 5mm thickness. BulletPoint4 : Suitable Range - These are great for small hobby 5mm shaft/rod projects. BulletPoint5 : Total Quantity - There comes total 20 pieces miniature bearings which you may use for many different projects. IncludedComponents : No ItemName : 625RS Ball Bearings, 20pcs Rubber Sealed Deepgroove Ball Bearings 16mmx5mmx5mm Suitable for Small Hobby 5mm Shaft/Rod Projects ItemPackageDimensions_Height : 2 centimeters ItemPackageDimensions_Length : 11 centimeters ItemPackageDimensions_Width : 7 centimeters ItemTypeKeyword : stainless-steel-precision-balls Manufacturer : Wisoqu ModelNumber : Wisoquahned0vr7q NumberOfItems : 1 PartNumber : Wisoquahned0vr7q ProductDescription : 625RS Ball Bearings, 20pcs Rubber Sealed Deep- Ball Bearings 16mmx5mmx5mm suitable for small hobby 5mm shaft/rod projects