A: 12″. B: 18″. C: N/A. D: N/A. E: 27″. F: 33″. G: 14″. H: 1.13″. I: N/A. J: 5.88″ R. Weight: 467 lbs. ? Made from ASTM A27 cast steel and are built to withstand the toughest conditions. No surface paint or finish to maintain quick, easy and safe weld-ability to the deck of any barge or workboat. Designed specifically to guide mooring lines on deck. They act as a guide to feed a line or wire in a particular direction while minimizing chaffing. They are typically welded to the bulwark of a vessel.