The Deco Window Add-On-Rod offers the flexibility to convert your rod set to a double rod without having to install any additional hardware. Simply connect it onto your already installed round adjustable bracket. It's the easy way to complete the custom look of your decorative window treatment. For Window Between: 36" (91 cm) to 66" (168 cm) Type: Curtain Rod Accessory Double Bracket: 0060177-K001 Add on Rod: 1952961-K001 Finish: Powder Coated Diameter: 19 mm both slots Add on rod 19mm Finish: Black Matt Qty: 1 Add-on Rod, 3 Double brackets Returnable: Yes (15 Days no question asked Return Policy)