NON-SLIP RUBBER - Non-slip rubber on both ends of the shower curtain rod can increase the friction between the rod and the wall, making the rod stronger and less prone to come off NON-SLIP RUBBER - Non-slip rubber on both ends of the shower curtain rod can increase the friction between the rod and the wall, making the rod stronger and less prone to come off SPRING INSIDE - the spring is very springy and provides enough tension for a strong support rod HIGH QUALITY METAL ROD - The layer is electrostatically sprayed, it can be anti-rust, smooth, delicate and beautiful. RETRACTABLE LEVER - extends the largest space within a certain range, thus reducing application limits