Chrome pull cord connector use to extend the rope or bead chain of the switch and device, eliminating the hassle of unnecessary life. , Total siz: 12.3mm (Dia.) *21.6mm (High), hole size: 3.7mm (Dia.), metal roller blind beaded chain connector hole can pass through less than 3.6mm ball chain and rope. , Used to join one end of a cord or ball chain to another, keeps it very well together, can be opened again and the rope knot can be completely hidden.(Like the picture 4). , Material: metal, smooth surface with chrome, it is not easy to rust, does not oxidize, does not break, and more durable than the plastic pull cord connector. , Applications: suitable for bathroom, basement, bedroom pull cord operated switches, lights, fan, wall mounted humidifiers, wall lights, table lamps, blinds and more.