Blue Donuts Ceiling Fan Pull Chain Extender 3.2mm Diameter Chrome Chain Extension, Pack of 6 – Two 12 Inch, Two 24 Inch, Two 36 Inch, Metal. With a set of 6 ceiling fan pull chains you can rest assure that our pull chain extensions are ideal for any type of a project. Whether its a home or office project Blue Donuts ceiling fan pull chains have got you covered with two 12 inch chains, two 24 inch chains and two of 36 inch chains. Each decorative pull chain is made of metal with coated paint which makes it ideal for modern or boho lifestyle settings. Ceiling fan pull chains can be adjusted to any length needed.