FYH Bearing 20mm UCFL204E Flanged Mounted BearingsUCFL204E FYH Bearing Flanged Mounted Bearing Cylindrical bore (with set screws) 20mm 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. Item: UCFL204E