All genuine Dankung slingshots are made of stainless steel or high quality aluminum alloy.
But there are some zinc Dankung counterfeits circulating in the markets, especially some Internet stores.
Zinc is much cheaper than steel and is very fragile. Zinc slingshot is often insane low price and falsely indicated as steel by sellers.
For your safety of eyes, never use the zinc dankung counterfeit slingshots.