This is the same bearing that is shipped in the Focus V2 and the Focus Gamma.  It is a radial, open, unflanged, 10 ball, stainless steel,  ABEC 3 with dry lube.  Dimensions are .500 inch diameter, .250 inch bore and .125 inch wide.  This bearing is manufactured by New Hampshire Ball Bearing.  Their catalog part number: SSRI-814RA3P25LD.