Best used as custom oar locks on canoes or for replacement parts. Two black heavy-duty engineered plastic Oar Sockets to hold ½ inch oar locks. Does not fit Rogue River, Rockport, Saranac canoes. Old Town and Carlisle are the same company. Best used on Old Town canoes. Also known to fit some Wenonah canoe and possibly other brands with a similar vinyl gunwale design. These might not work with some aluminum or wood gunwales. Recommended use with Carlisle - Old Town Oar Locks, sold separately. Comes with brackets and mounting hardware (screws, washers and nuts). Carlisle - Old Town part number 01.1331.2322. Same part as Sea-Dog 580143 and Sea-Lect K580143-1.