1. High speed, low noise, long life 2. High temperature resistance, high precision, excellent products 3. Bearing rings: including inner ring, outer ring; high-quality steel support, effectively extend the service life of bearings 4. Rolling body: transfer of load between inner and outer rings 5. Cage: reduce friction heat, optimize load, easy to disassemble 6. Integral seal: greatly extend the service life of the bearing, the lubricant will be retained in the bearing to keep out pollutants 7. Metal sealed bearings: good speed, high temperature resistance, suitable for high-speed operation 8. Sealing bearings with rubber cover: good dustproof effect, suitable for use in harsh environment, dustproof and waterproof 9. Open type unsealed bearing: good speed, quiet, suitable for closed mechanical interior 10. Inner diameter: 5mm 11. Outside diameter: 13mm 12. Width: 4mm 13. Accuracy class: P0 14. The standard number: GBT / 276-2013Specification: Package Weight One Package Weight 0.07kgs / 0.16lb One Package Size 12cm * 8cm * 6cm / 4.72inch * 3.15inch * 2.36inch Qty per Carton 404 Carton Weight 30.00kgs / 66.14lb Carton Size 50cm * 50cm * 60cm / 19.69inch * 19.69inch * 23.62inch Loading Container 20GP: 177 cartons * 404 pcs = 71508 pcs40HQ: 412 cartons * 404 pcs = 166448 pcs