Retail 3 IN 1’ Cylinder The ‘3 IN 1’ Cylinder allows users to easily change the key’s combinations. The process is simple and fast: the user inserts and operates the "next key" from a set of three keys. The introduction of each new key set is designed to invalidate the previous key combination. Three key types are packaged together, color-coded and clearly marked in a sequence, to intuitively guide customers. First, the green set of keys is used. When users move on to the yellow keys, the green is designed to be automatically cancelled. And should the combination need to be changed again, the red set - designed to automatically invalidate both the green and yellow – is used. If all three sets of keys are lost or misplaced, customers can see a Mul-T-Lock authorized locksmith to rekey the cylinder, to a new set of three combinations. The ‘3 IN 1’ Cylinder can be ordered with three duplicating cards for one for each color, green, yellow and red keys. Through our network of selling units, distributors and retail partners, you can learn more about this and other solutions, receive expert advice and custom solutions