Uniclife Key Cap Rings, 50 Pack, 8 Assorted Colors Key Identifier Tag Covers TAG YOU KEYS: Organize your keys by color. Uniclife Key cap rings are perfect for boneheads who can't remember which key goes where 50 PIECES, 8 COLORS: Blue, Yellow, Blue, Green, Black, White, Orange and Purple. DURABLE MATERIAL: Rubber-Like vinyl resists cracking and color fading. Pliable but will not break. FOR MOST FLAT KEY TYPES: These key rings will stretch to fit most standard key heads. BUT not suitable for car, motorcycle or boat ignition keys. Overall Diameter: 25mm, come with Retail Package.