6-1/4 O.D. Top Sub with O-Ring pin thread (Oversized from 5

6-1/4 O.D. Top Sub with O-Ring pin thread (Oversized from 5-3/4 OD) and furnished with Blank Top Connection with 4-3/4 OD x 15 Long Fishing Neck, for use with High Pressure Pack-Off Assembly for BASKET GRAPPLE CATCH SIZES. (8976)f/ Logan Series 150 Overshot.