[Square-end Design: At the same diameter the contact surface of a square end is larger than a round end, so we pursue better stability by the square ends. Square-end design of the shower curtain rod makes full use of the corners and reduces the existence of dusty corner as well. Splicing + Rotation Adjustment: A complete shower curtain rod consists of 1 x outer rod 1 x splicing rods and 1 x telescopic rods. The maximum length you can extend through the telescopic part is 12 " the adjustable length range of shower curtain rod: 32 "-55". No-drilling Installation: 2.15" x 2.15" non-slip pads are attached to both ends of the shower rod. There is a spring in the shower curtain rod to play a certain role in the installation process. Please note: Be sure to adjust the shower curtain rod to the max length that can no longer be moved before hanging heavy objects. No More Rust: The heavy duty shower curtain rod is made of high quality stainless steel coating on the surface which will not rust after high temperature process extending the service life of the shower rod.