FYH Bearing UCFL204-12E 3/4 Flanged Mounted BearingUCFL204 12E FYH Bearing 2 Bolts Flanged Cast Housing Cylindrical bore (with set screws) 3 4" Inner Diameter Bearing This two bolt flange has a bolthole center dimension equal to that of the diagonal bolthole center of the four bolt flange. Therefore, the two different styles are compatible, however, the two bolt style utilizes less space and also weighs less. Applications are Roller conveyor and environments where mounting area is limited. UCFL204 12E