Hy-Ko KB130-200 Key Identifier, 1 in L x 1 in W x 0.12 in H Dimensions

Used to code keys by color. Assorted neon identifiers include green, orange, pink and yellow; assorted multi-colored include blue, dark green, light yellow and red. Small for luggage, locker, padlock and security case keys; medium for most standard keys and large for large-headed keys.