EONLION Extendable Tension Shower Curtain Rod, 260-310cm No Drilling in Black; 1.The multifunctional telescopic pole is made of 304 stainless steel with a big spring inside. The telescopic rod with a diameter of 32 mm has greater robustness and a load capacity of 20 kg. 2.The design concept of telescopic rod is to protect the wall surface. Therefore, no drilling is required. The non-slip plastic on both ends can also better protect your wall surface. 3.You should set the telescopic rod to be 4-6 cm longer than the wall, then press one end of the telescopic rod against the wall and squeeze that at the end to clamp the telescopic rod to the wall. EONLION Extendable Tension Shower Curtain Rod, 260-310cm No Drilling in Black color: Black