Pull chain extension: 10 feet/ 3 meters long of silver metal beaded chain with 10 pack matching connectors; Good for replacement form handle or extension pull chain Dead diameter of roller blind pull chain: 4.5 mm/ 0.18 inch (Note: please allow a little size error due to manual measurement); With 10 matching connectors attached, which is convenient Applicable scene: main suit for ceiling fan chain, high ceiling light fixtures, on the ceiling for ventilation, as pull chain for curtain, bottle cap pendant necklaces and many other places Notice: 4.5 mm diameter bead chain is suitable for replacing the roller blind and shutters bead chain; 3.2 mm diameter bead chain that is not suitable for replacing the roller blind and shutters bead chain; Please make sure the replacement diameter of ball size pull chain when you buy it Adjustable in length: cut your desired length of pull chain to install on the places, which is convenient for your daily life