Description: _x000D_ Miniature ball bearings are available ball bearings of small size. These miniature ball bearings 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, such as mechanical equipment, electrical instruments, toys, doors and windows. _x000D_ _x000D_ _x000D_ Features: _x000D_ These miniature bearings are made of high quality bearing steel for low noise and long service life. _x000D_ They are double shielded to avoid contaminants entering and save lubricant. _x000D_ Bearings have a 8mm inner diameter, a 16mm outer diameter, and a 5mm thickness. _x000D_ These are great for 8mm shaft/rod projects such as mechanical equipment, electrical instruments, toys, doors and windows._x000D_ _x000D_ There comes total 10 pieces miniature bearings which you may use for many different projects. _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Material: Bearing steel _x000D_ Inner Diameter: 8mm / 0.31"_x000D_ _x000D_ Outer Diameter: 16mm / 0.63" _x000D_ Thickness: 5mm / 0.19" _x000D_ Quantity: 10pcs _x000D_ _x000D_ _x000D_ Package Includes: _x000D_ 10 x Bearings