The Minute Key rugged carabiner is made from industrial strength 6061 aluminum for reliable use. The carabiner features an anodized finish and corrosion resistance for a longer product life. The carabiner is incredibly lightweight yet features a very strong build that adds little weight to your keychain. A rugged carabiner made from industrial strength 6061 aluminum. Anodized finish and corrosion resistant. Incredibly lightweight yet very strong build adds little weight to your keychain Four black mini carabiners included