shapenty 100pcs black metal key rings bulk flat split key chain part connector keyring clip keychain clasp holder for diy craft project and home car keys organization (black, 1 inch/25mm) shapenty shapenty rings are very strong and durable for home car keys attachment, flat shape key rings can make the keys jiggle less and the recessed opening for key insertion/removal is easy to open. it is a very widely used small product in our daily life.