What is this?The ball chain connectors can connect two ball chains in a line. Widely used on crafts making, such as leather suitcase chains, , keychains, light fixture chains, and other DIY projects.What will I get?Product Name: Ball Chain ConnectorColor: Silver ToneMaterial: 304 Stainless SteelConnector Fit for 1.5mm Ball Chain: 2mmx6mm / 0.08"x0.24"(Width*Length)Connector Fit for 2mm Ball Chain: 2.5mmx7mm / 0.1"x0.28"(Width*Length)Connector Fit for 2.4mm Ball Chain: 3mmx9mm / 0.12"x0.35"(Width*Length)Connector Fit for 3.2mm Ball Chain: 4mmx11mm / 0.16"x0.43"(Width*Length)Connector Fit for 4mm Ball Chain: 6mmx13mm / 0.24"x0.51"(Width*Length)Package Content: 10 x 1.5mm Ball Chain Connector; 10 x 2mm Ball Chain Connector; 10 x 2.4mm Ball Chain Connector; 10 x 3.2mm Ball Chain Connector; 10 x 4mm Ball Chain ConnectorAre there any advantages of the product?Made of 304 stainless steel, with good rust resistance and strength.With smooth surface, comfortable to touch.How to use it?Directly put the ball chain into the central connection, no need for toolsWhat should I notice?Please measure your ball chain diameter before buying our connector. There have 4 different sizes in the package.