【Superior Material】-Made from premium Inside and outside tube diameter: 13 / 16MM Carbon steel ,sturty and durable 【Easy to Install】-Adjustable Spring Tension Curtain Rod ranges from 28 to 43 inches.non-slip, no drilling required, does not rust, never collapses, non-corrosive, easy to clean,curtain tension rod 【Firm Non-slip】- Made of Strong and Rough Metal materials, Metal rod with plastic ends, Baked black paint material surface, a strong stretch to extend enough to support the force, bearing is 2 times the ordinary items.you don't have to worry about it slipping or falling 【Application】-Multi-purpose, installed as hanging curtains / curtain / shower curtain / wardrobe bars/door curtain tension rods/rv refrigerator bar 【Excellent service】- Any questions about rods, welcome to contact us anytime, our service team are 24H×7D online to help you Not just for window drapes, this extension rod also serves as a reliable closet or doorway curtain rod. Streamlined solutions, refined aesthetic，2Pack Spring Tension Curtain Rod 28-43 inch Black Adjustable Spring Rod Extendable Tension Rod For Kitchen, Bathroom, Window, Bookshelf, Closet,【Easy to Install】-Adjustable Spring Tension Curtain Rod ranges from 28 to 43 inches.non-slip, no drilling required, does not rust, never collapses, non-corrosive, easy to clean,curtain tension rod