1 NECKLACE - This package includes one ball chain necklace. T304 STAINLESS STEEL - Our Tag-Z Stainless Steel Ball Chains are manufactured in the USA from US made T304 Stainless Steel. Our Stainless Steel chains will not rust. The Stainless Steel has a polished matte finish(dull) like a new stianless kitchen sink. The balls on the chain are 2.4mm in diameter so they fit through the hole in a dog tag perfectly. There are about 8 balls per inch of chain. MADE IN THE USA - Our chains are made by the only US manufacturer to supply the US military soldiers and is manufactured to the highest quality. They are MilSpec #3 size chains and the same chains that are issued to the military soldiers for their dog tags. HOW TO CLOSE THE BALL CHAIN - Put the ball into the connector and pull both sides of the chain away from the connector until the ball 'snaps' into place. These are really tough US made ball chains, so sometimes it takes a good tug for the it to snap into place. HOW TO SHORTEN THE CHAIN - You can shorten the chain with a pair of wire cutters. Just put the blades of the wire cutters between the balls and squeeze. Easy as that! Just be careful not to shorten it too much at one time. Once you cut it, the balls can't be re-attached.