Corner curtain rod elbow that adjust 90 degrees to 180 degrees to fir bay windows or corner windows. Fits 1 1/2 inch diameter indoor or outdoor curtain rod. Available in two colors in stock, ready to ship. It can be used indoor or outdoor. Use on those windows that face patio or pool area, or use inside on any window. Charleston collection by Design Elements. Finish: Powder coatedMaterial: Metal Use indoor and outdoor1 5/8 inch long by 2 5/8 inch wide Priced each.