Hy-Ko KC129 Key Ring, 0.22 in L x 2-3/4 in W x 5-1/2 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.