Deep Groove Metric Ball Bearing - Metal Shielded 12mm x 28mm x 8mm Deep groove ball bearings are particularly versatile. They are suitable for high and very high speeds, accommodate radial and axial loads in both directions and require little maintenance. Deep groove ball bearings are the most widely used bearing. • Inside Diameter 12mm • Outside Diameter 28mm • Width 8mm • Metal Shielded • Chrome Steel • Weight .40gms Type: Bearings