InterDesign Forma Ultra Constant Tension Shower Curtain Rod &ndash; extendable 43&rdquo; - 75", Medium, Split Finish CONSTANT TENSION: Patented technology holds the Curtain rod securely in place  no slipping. ADJUSTABLE FIT: The tension rod extends to the perfect length for custom showers. ATTRACTIVE DESIGN: Curtain pole is rust resistant, polished stainless steel with brushed finials. EASY TO INSTALL: No tools, drilling or hardware - just twist the curtain pole and lock into position! THE INTERDESIGN PROMISE: Bringing you elegant, affordable home products for over 40 years.