6306 SKF Deep Groove Bearing - 30 x 72 x 19mm This 6306 SKF bearing is a Open Type Deep Groove Radial Ball Bearing with a standard radial internal clearance The bearing's dimensions are 30x72x19mm Type: Deep Groove Ball BearingClosures: Open Size: 30mm x 72mm x 19mm Inner Diameter: 30mm Package Includes : One (1) 6306 SKF (OPEN, NO SEALS)