Products SocketOthers Socket Back Heavy Duty Oarlock Assy 256-03158-00 HEAVY DUTY OARLOCK ASSY ITEM NO. Size 256-03157-00 1/2" 256-03158-00 9/16" 256-03159-00 5/8" You May Also Be Interested In Oarlock Round Horn 256-03275-00 Heavy Duty Oarlock Assy 256-03157-00 D Shackles with Captive Bolt 956-00830-00 Block Slide 156-45301-00