WBPB81-Plain Bearing
4.5" x 4.0"
4.5" x 4.5"
5.0" x 4.0"
5.0" x 4.5"
5.0" x 5.0"

WBBB81-Ball Bearing
4.5" x 4.0"
4.5" x 4.5"
5.0" x 4.0"
5.0" x 4.5"
5.0" x 5.0"

WB4B81-Heavy Weight Ball Bearing
4.5" x 4.0"
4.5" x 4.5"
5.0" x 4.0"
5.0" x 4.5"
5.0" x 5.0"