Ball Chain Connectors: The dog tag ball chain is equipped with a connector that can be adjusted in length. Simply cut it between the balls to meet your needs, and the connector connects the chain, making it easy and convenient to use 30 Feet/9M Bead Ball Chain: The package includes 30 feet(10 yards) brass ball bead chain, 20pcs ball chain connectors and 1pc spool, so you don't need to purchase them separately and it's perfect for DIY production Size: Silver ball chain roll: 1.5mm(0.06in) in diameter, 10 yards(30 feet); ball chain connectors: 5.5 x 2mm(0.22 x 0.08in), fit for 1.5mm(0.06in) ball chain; spools: 6.9 x 1.4cm(2.72 x 0.55in), hole: 10.5mm(0.41in) Great Quality Material: The silver ball chain roll and ball chain connectors are made of high quality brass, with a smooth surface that is not easily broken or faded, and is sturdy and durable Suitable for DIY: The brass ball bead chain is very suitable for DIY. You create unique bracelets, necklaces, ankle chains, waist chains, dog tags, and other accessories based on your preferences and imagination