Bigger, Compatible Size: The customized black curtain rings metal with inner diameter of 38 mm and outer diameter of 46 mm is well-matched with up to 37 mm curtain poles, and looks great on various types of rods such as black, brass, copper, chrome, and more Durable and Bearable: The premium rust-resistant black coating makes these curtain rings durable to last longer and strong enough to hold heavy curtains or drapes, curtails the slipping of heavy droppings and does not deform Smooth Sliding and Lustrous Finish: The flawless, no-burr, refined surface of the metal curtain rings ensures smooth gliding and effortless slithering along the rod, thus, eliminating the ripping, tugging, and pulling of the curtains Easy Installation: Attach curtain hooks with the curtain hoops and pass them through the curtain rods and the curtains are ready to slide. Thus, the glittering hooks are easy to fit, bring elegance to your fabric curtains, and are safe for a long-term use Wide Applications: The glossy decorative curtain ring is perfect for hanging weighty curtains, tapestry, shower or window curtains, and thick hangings in home and commercial spaces such as bedrooms, living rooms, lounge, hotels, offices, and more