Zelta Simple And Easy to Install Keys KeyChains,Genuine Leather And Eco-friendly Zinc Alloy Black Key Chain Key chain diameter: 0.9"; Length: 3.7" The leather is made of 100% durable full grain leather The keychain is made of zinc alloy and polished for a shining mirrored finish Pull the round ring upward. Swivel to any direction, then you can add or remove keys Give these keychain for Father's day, anniversary, birthday, Christmas, graduation present, corporate gifts and more