Adjustable curtain poles can be used for 70-130cm, just extend and adjust the length according to the size of your window. Spring loaded curtain rod are made of premium High-carbon steel. And each rod is treated by a paint-baking process. 0.4mm wall thickness and 2.22cm diameter, which means this sturdy curtain rod is capable of most curtains.Easy to Adjust, No Tools Needed, No Drilling, No Rust.Telescopic Curtain Pole Rubber Anti-skid Base is very firm, Suitable for Glass, wooden walls, marble, lime wall, and ceramic tile.