1)Brass or Iron 2)Eco-friendly, washable, Nickel-free 3)Oeko-Tex 100 standard 4)Competitive price 5)prompt ... -brass, anti-copper, gun metal, light pewter, dull-nickel, nickel free dark pewter, nickel free light pewter, nickel free dull-nickel, and more3) Size27*20 ... Oeko-Tex Standard 100 Certification Metal/Brass/Iron/Alloy nickel-free eyelets for garments/shoes/curtains/tents