A Shackle Guard Doughnut or a Doughnut Shackle Guard, whatever you want to call them, are handy little boat and sheet accessories that help protect your gear.
While these doughnuts have many uses such as sail protectors on rails and lifelines, on crosstree spreaders or as trapeze handles; they are most often see protecting shackles on your spinnaker lines to prevent the shackle from jamming into the pole end fittings.
These Ronstan Shackle Guards are available in Small, Medium or Large with varying internal line diameters and come in ether Red or Green.
|Line Diameter (in)||3/8|
|Line Diameter (mm)||10|