Many uses for these split rings from fishing, hobbies, jewelry making, pet collars, key rings, home projects, arts and crafts, and so many other uses I have yet think of. Great for replacing the rusty hooks on your favorite lures large or small. So many uses for this set! Stainless steel so they will last a long time whether you use them right away or not as they will not rust before you need them or after they are in use. These can be used with or without split ring pliers but I recommend using the split ring pliers (not included).  Good luck good fishing and tight lines always!    <:)))))><