Features: 1. The double curtain rod brackets will hold one 1 inch and one 5/8 inch curtain rods, projecting 4 inches from the wall. 2.Inner cup size is 5/8 inch and outer cup size is 1 inch. 3.Wont require you to level or adjust anything after installation as itll always be as level as your window frame. 4.Allows you to hang beautiful curtain without damaging your walls. 5.Made of durable metal, sturdy and durable. 6. These unique easy to install curtain rod brackets install in literally seconds, as they just tap right into your window frame. 7.The unique easy hanging curtain rod holders require just a hammer or mallet as they require not drilling or nails, are easily removed with no damage left afterwards, and they come in single or double rod holders depending on your preference. Specification: Quantity:1 Set Size: 10.5x5.5x4cm Material: 3A carbon steel plate (thickness: 1.5mm)