It is made up of 316-grade stainless steel, a highly polished surface for a mirror-like appearance and to match modern watercraft, boats, and yachts. It is very durable and long-lasting, highly polished stainless steel with maximum water and corrosion resistance and long-term durability. It is very easy to use, ideal for camping, hiking, fishing, travel, sports, activities, backpack, keychain, split rings, belt loops, pants loops, wallet straps, briefcase straps, and just about anything. Dimensions: Length: 3-1/2 inches, Stainless Steel Material. Package Includes Pack of 1 Marine City 316 grade stainless steel 3-1/2 inches Egg-shaped spring snap hook.