Zamak (Pewter) is an environmentally friendly metal which is an alloy of various metals. The pewter we use is of the highest quality comprising 95% tin, 0.5% copper and 4.5% antimony. Tin is a plentiful, non-toxic resource and tin mining has little or no impact on the environment. Pewter can be completely recycled.If you want to create personalized jewelry or craft to show a unique style, personality, interest, preference, or special moment, these accessories are perfect. They encourage creativity in jewelry designs due to their abundant designs and sizes.Give your creative design ideas wings to fly and make your unique jewelry or create whatever you desire with our products. We would be happy if you share your ideas with us.Pictures are design ideas only, no extra item included. SpecificationsHeight: 21 mmWidth: 7 mmLoops Hole Size: (Ø 6 mm)Hole Size: (Ø 4.5 mm)Weight avg.: 30 Gram (Pack)Base material: Zamak (Pewter)Lead, nickel and cadmium freeQuantity: 10 Pieces/packItem name: Bell CapsItem code: ZM689MADE IN EUROPE