Splicing Structure: This shower curtain rod consists of two end rods and three splicing rods. The size can be increased by adding different numbers of splicing rods. Anti-Rust Coating: Anti-rust shower rods for bathroom is made of stainless steel tubing. An epoxy resin primer and polyurethane waterproof topcoat are used for better waterproofing,can be used indoors and outdoors. Durable and Non-Slip: 1" diameter shower curtain rods spring tension has a strong spring embedded in the inner structure. With non-slip rubber pads on both ends to make it durable enough not to slip.