Logan Stop Sub, with 8-1/4 O.D. Stop Ring and furnished wit

Logan Stop Sub, with 8-1/4 O.D. Stop Ring and furnished with 4-1/2 I.F. (6-1/2 O.D. Upper Adaptor)box top and 4-1/2 F.H. (5-3/4 O.D. Lower Adaptor)pin bottom connections.