1. Material: pure copper 2. Color: gold, silver, bronze, black 3. Use: clothing jackets, down jackets, coats, windbreakers, denim, shoes, advertising displays, bags and other clothing accessories 4. The material is hard and thick, not easy to wear and rust 5. The eye buckle is polished and smooth, with a strong sense of metallic luster 6. Equipped with a storage box, dustproof and not easy to lose 7. Eye buckles size: inner diameter 5mm; outer diameter 8.5mm; height 3.5mm 8. Storage box size: - 200pcs/set: 12.8 x 6.7 x 2.2cm - 400pcs/set: 17.5 x 9.8 x 2.3cm 9. Weight: - 200pcs/set: 135.2g - 400pcs/set: 184.7g