Logan Stop Sub Assembly, with 4-3/4 OD x 18 Long Upper Sec

Logan Stop Sub Assembly, with 4-3/4 OD x 18 Long Upper Section with 3-1/2 IF BoxTop Connection and 4-1/4 OD x 16 Long Lower Section with 3-1/2 Regular Pin Bottom Connection, with 5-3/4 OD Threaded Stop Ring.