Premium material : This Extendable tension rods are made of sturdy high-carbon steel, stainless steel SK8 strong rough spring, and electrostatic spraying technology for the surface, rust-proof, smooth, durable. Easy installation & Adjustable : Simply twist and pull this spring rods without any tools, installed within minute. no drilling, no damage to walls/ doors / windows. Extendable length from 21.6" to 35.4"(55cm-90cm), 1/2 inch round diameter. Non-slip : Two non-slip high resistance rubber pad with spring loaded ends preventing rods from falling off. Tension Rod's grommets are in the end caps of each rod to ensure the rod doesn't eat/wear through the end cap and turns easier. End caps remove easily to ensure that you can get through the tightest of your curtain to fit the closet tension rod through. Wide usage: Tension rod can be used as refrigerator bars, closet rods, coat hanger, shoe rack, bookcase rod, cabinet rod, cupboard rod, pantry rod, kitchen window tier valance covering bathroom shower curtain rod, window rod. Used in wardrobe, RV cupboard, DIY projects, etc.