Deep Groove Metric Ball Bearing - Metal Shielded 40mm x 68mm x 15mm 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 40mm • Outside Diameter 68mm • Width 15mm • Metal Shielded • Chrome Steel • Weight 210 gms