Chain Extension Pull: 10 feet/3 meters long silver metal bead chain with 10 matching connectors; Ideal for replacing a handle or pull chain extension. Bead Chain Diameter for Roller Blind: 4.5 mm/0.18 inch (Note: please allow a slight size error due to manual measurement); Comes with 10 attached matching connectors for convenience. Applicable Scene: Main combination for ceiling fan chain, high ceiling lights, ventilation, curtain pull, bottle cap pendant necklace, and many other places. Note: The 4.5 mm diameter bead chain is suitable for replacing the bead chain on roller blinds and shades; The 3.2 mm diameter bead chain is not suitable for replacing the bead chain on blinds and roller blinds; Please ensure the replacement diameter when purchasing. Adjustable Length: Cut the desired pull chain length to install in suitable places, making it practical for your daily life.