High-quality plastic rings: Curtain eyelet rings are made of high-quality plastic, suitable for thin fabrics. Threaded buckle design helps keep curtains securely in place and is not easy to loosen. The round curtain rings help keep curtains in good condition and prevent them from falling. Smoother and quieter operation: Features built-in nanoscale silent rings that glide smoothly on curtain rods with low noise. Reduces friction for smoother and quieter sliding, ideal for bedrooms, children's rooms, and study areas. Matte silver finish: The curtain rings have a matte silver appearance for an elegant look that matches any curtain color or fabric. These durable rings are perfect for curtains, bed sheets, shower curtains, floor-to-ceiling curtains, closet doors, and more. They resist rust even in humid environments like bathrooms. Flexible and easy to install: Designed with quick-attach grommets that require no special tools. The smooth, polished surface has no burrs, preventing hand scratches and curtain damage during installation. Large size and quantity: Each set includes 20 rings. The inner diameter is 40mm and the outer diameter is 70mm. These sliding rings are suitable for bathtubs, clothing rails, bathrooms, dressing rooms, curtains, bed canopies, mosquito nets, and store fitting rooms.