Stainless steel: Shower curtain hooks are made of brass and premium quality stainless steel. Bathroom environment without rust or corrosion resistance,and ensure long-lasting durability. Gliding: Rolling balls on the hooks reduce noise and allow smooth and hassle-gliding over all types of shower rods. Double Sided Hooks: Dual roller sliding design hangs the shower curtain and liner separately. And the shower curtain or liner can be easily removed on either side. size: The dual hook is designed to fit shower rods from 3/4 "to 1-1/8" diameters,which means curved,straight,or custom types of rods are all fits. Heavy duty: Stainless steel provides stronger support for heavier wet shower curtains than other hooks and is easier to move when in use. Package includes: Set of 12 double-sided shower curtain hooks,enough quantity to hang different types shower curtains and liners..