●~Material: Zinc-nickel alloy ●~Size: Diameter about 35~45mm ,thickness about 2.5~4mm ●~Weight: about 20g ●Call of Cthulhu board game theme coin ●~Use and maintenance: When playing with, please pay attention to avoid long-term dry strong corrosive environment, strong knock against may damage the plating,No corrosion,No friction,No flame.