... alloy 2), Color: Anti-brass,gun-metal etc 3), Size: 15,18,20mm etc 4), accept OEM Note: All trademarks and brand ... button MaterialZinc alloy, brass, resin. plasticColorAny color ( as requested)SizeAny size ( as requested)PrintingAs requestedTechniqueGilding, dyeing, laser logo, painting, embossed, engraved ...