1、This bearing is made of high quality stainless steel and ceramic, durable to use. 2、Bearing with ceramic balls is better resistant to corrosion and rarely require lubrication. 3、Bearing has a 5mm inner diameter, a 11mm outer diameter and a 4mm thickness. 4、High speed, low noise and long service life. 5、This bearing has good sealing performance with double-sided sealing. Features: This bearing is made of high quality stainless steel and ceramic, durable to use. Bearing with ceramic balls is better resistant to corrosion and rarely require lubrication. Bearing has a 5mm inner diameter, a 11mm outer diameter and a 4mm thickness. High speed, low noise and long service life. This bearing has good sealing performance with double-sided sealing. Specification: Inner diameter: 5mm Outer diameter: 11mm Thickness: 4mm Rolling body type: ball Bearing material: stainless steel Rolling body: ceramic ball Rolling body series: single row Sealing: double-sided sealing Accuracy level: P5 Package Weight: Approx. g/oz Package List: 2 * Bearing