... Zinc alloy 2.Technic: Casting 3.Principle: Good service bottle opener,beer bottle opener,keychain bottle opener1) Material: Zinc alloy, Copper, Iron, Aluminum, etc ... logo is welcome. Engraved, embossed, glued, coloring, etc.4) Color: Multi-color is available.5) Usage: Gifts, crafts, or collections, and souvenirs ... for exact, responsible and professional quotation. Thank you! Metal Beer Bottle Opener