Iron Rolo Chains, Belcher Chain, Unwelded, with Card Paper, Lead Free, Silver Color PlatedSize: Chain: about 4mm in diameter, 1mm thickThe chains are come on reel, and the picture in roll is for reference only, the real size of the reel varies from different chains.Iron Chain is a wonderful component for making jewelry. They can be matched with jump rings and clasps, as well as acrylic beads, glass beads, gemstone beads to be popular necklaces, bracelets and belts. They also can be used as separate extenders and dangles.