Design House 561019 Shower Rod-Straight, Polished Chrome Finish

• Expands from 36-Inch to 63-Inch
• 1-Inch diameter rod, Straight
• Polished chrome finish

Twisting the rod makes it unscrew and get longer.One of the hard-rubber end-caps is intentionally loose, so when it finally touches the wall, the cap lets the rod continue to turn as it tightens.As it reaches the right length, a spring inside compresses to provide tension.The end-caps grip the wall tightly.Bang!Installed it in one try, about 30 seconds.

Looks good; nice smooth finish lets the curtain hooks slide noiselessly.