Want to make your own size chains? It is easy with this spool of #3 Chain! (2.4mm)ball size, nickel plated 50 ft. spool. Use #3 connectors (sold separately) and simple to cut with wire cutters or sharp sissors. Average about 94 balls per foot. #3 is most popular size for neck chains, dog tags, promotional items, lanyards, id badges, retaining chain, jewelery.