The Ivilon Square Finials are designed for curtain rods with a diameter of 1 and 1-1/8 inch. This set includes two finials in a sleek black color, adding a stylish touch to your window treatments. The package dimensions are 6.42x3.7x3.03 inches, and each finial measures 1 1/8 inches in length. With a weight of 0.73 pounds, these finials are sturdy and durable for your curtain rod hardware needs.