Line anchors are used to wrap and hold your shooting line against your speargun and provide an anchor point for your shooting line and muzzle bungee. If using a reel, it works like and eyelet for your reel line to run through. Constructed from 100% stainless steel, this is a solid stainless steel component that will last. This product can also double as a loading rest tab for loading long spearguns. Comes complete with stainless steel mounting screws.