BB81EL/CB81EL-Electric Ball Bearing
4.0" x 4.0"
4.5" x 4.0"
5.0" x 4.0"
5.0" x 4.5"
5.0" x 5.0"

MBG-Adjustable Mortar Box

BB81EM/CB81EM-Monitor Ball Bearing
4.0" x 4.0"
4.5" x 4.0"
5.0" x 4.0"
5.0" x 4.5"
5.0" x 5.0"