Anchoright 10 mm Chain Marking Set. Markersdesigned to stay in place for many seasons. Being available in a wide range of colors you can have a different color for each point you want to mark. Our kit makes it easy for even a boating novice to set up, install and use.Features:The 10 mm Set includes:- One Guide Plate to mark from 4 to 15 positions on a chain. You decide the color setting when you put the guide plate scales into place.- As you put the guide plate together you can decide on whether to include a point for the anchor and whether to have intervals of 5, 10 or 25 units.- Top-quality A4 / 316 marine screws are included for both the chain markers and the guide plate.- Knowing how much chain you have released is possibly the most important part of anchoring!