4-11/16 OD Crossover Extension Bushing 20 Long Shoulder to

4-11/16 OD Crossover Extension Bushing 20 Long Shoulder to Shoulder. Crossover from C2005 (10544) 4-11/16 O.D. Series 70 Bowl to A1019 (9110) 4-11/16 O.D. Series 150 Top Sub. f/ Series 70 Overshot.