InterDesign Formbu Constant Tension Shower Curtain Rod - extendable 26&rdquo; - 42", Small, Bamboo ATTRACTIVE & ADJUSTABLE: Bamboo wood finish tension rod extends to fit custom showers. TENSION TECHNOLOGY: The Curtain rod is secured with patented constant tension design  no slipping. NO CORROSION: Curtain rod is made of rust resistant steel and plastic for a strong, reliable hold. EASY TO INSTALL: No drills, tools or hardware, just twist and fit - hang shower curtains in minutes! THE INTERDESIGN PROMISE: Bringing you elegant, affordable home products for over 40 years.