When we finished fishing on Thursday, I took Keith on both sides of the breakwater to show him the latest condition of the structure. The allthread in the picture is just backing itself out. They are stainless steel and about 26 inches long. We have tried about everything to keep them in place. Once they fall in this six to eight foot water they are lost. A magnet will not pick up stainless steel. I would guess they cost about $25 each. Right now we have about 15 to 20 that are gone or on the way out. Keith was able to pull out and salvage four like the one in the picture.  Once these come out the whole thing starts to unravel.