About This [1.5"Inner Diameter + 1.8" Outer Diameter]: Precision-engineered to fit curtain rods up to 1.4" in diameter, Fits 95% of curtain rods on the market.; ideal for upgrading bedrooms, living rooms, and hotel bathrooms [80-Pack Heavy-Duty Set]: Includes 50 built-in hook+ring combos; supports up to 11lbs (5kg) per ring for heavy drapes, blackout curtains & shower curtains; 66% more quantity than standard 30-packs for large homes & commercial use [Premium Stainless Steel Construction]: Rustproof 304 stainless steel with matte black electroplating; resists corrosion in high-moisture areas like bathrooms & kitchens; smoother surface than iron/steel rings for silent, snag-free gliding [Tool-Free Installation In Seconds]: Slide rings onto rod directly; hang curtains via built-in hooks – no pins, clips or tools required; ideal for all people [Uniform Matte Black Finish]: Vintage-inspired design complements modern, farmhouse & industrial decors; factory-calibrated coloring ensures no color variation; scratch-resistant coating stays sleek after 10,000+ uses Overview Color : Black Material : Stainless Steel Brand : CONAMEI Number of Pieces : 50 Finish Type : Polished