Specifications: Material: Carbon steel and plastic Color: Black Size: 40-70cm/15.7-28 inch Curtain rod diameter: 13mm load rating: No more than 2.2lb (approximate) Easy installation without any tools,no damage to walls or doors and windows How to use it? √1. Keep the wall dry and clean. √2. Unscrew the inner rotating rod to required length,3-5cm longer than the actual shortest distance between two sides of objects. √3. Fixing one end of pole,the other is 45 angle with the door. √4. Push the other end of pole up,make it be parallel with the door. Propped up by spring finally. √5. No drills or screws are needed. Package included: 2 Pack * Black Tension Curtain Rod Carbon steel and plastic 1.Material: Tension Rods is made of stainless steel. Corrosion-resistant and rust-proof and can be used for a long time. 2.Size: Outer tube diameter 13 mm. The length of tension curtain rods is adjustable from 15.7" to 28". 3.Easy to install: Twist and fit tension rod for easy installation. No tools,no damage to walls or doors and windows. Curtain extension rod can be adjusted to the length you need. 4.Widely Application: Suitable for a variety of surface material. The Tension Curtain Rod is suitable for windows,cupboard,doorway,closet,cabinet,wardrobe,bathroom,shower stall,shower curtains. 5.Package including: Total have 2 Pack Tension Rods,which can meet your daily time use..