Type Diameter, mm Thread
PBF418 4 1/8"
PBF414 4 1/4"
PBF618 6 1/8"
PBF614 6 1/4"
PBF638 6 3/8"
PBF612 6 1/2"
PBF818 8 1/8"
PBF814 8 1/4"
PBF838 8 3/8"
PBF812 8 1/2"
PBF118 10 1/8"
PBF114 10 1/4"
PBF138 10 3/8"
PBF112 10 1/2"
PBF218 12 1/8"
PBF214 12 1/4"
PBF238 12 3/8"
PBF212 12 1/2"