The hook and eye closures are made of good quality, not easy to rust and fade. Easy to use and effective fasteners for any sewing project; The 2 parts could be buckle together side by side. Suitable for various sewing activities, you can apply them to fix up your broken pants, dresses, skirts, trousers, slacks, sweaters, etc. Specification: Material: Copper Hook Size: Approx. 15 x 11 mm / 0.59 x 0.43 inch Eye Size: Approx. 15 x 3 mm / 0.59 x 0.12 inch Package Includes: 20 Sets Sew on Hook & Eye Closures(3 Pack) Note: Please allow a little size error due to manual measurement. Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the item's color may be slightly different from the pictures. Please understand.