Deep Groove Metric Ball Bearing - Metal Shielded 20mm x 42mm x 12mm 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 20mm • Outside Diameter 42mm • Width 12mm • Metal Shielded • Chrome Steel • Weight 80 gms Type: Bearings