This C series is for OLD Eagle locks that were used on Brown Morse, Peerless File Cabinets using an Eagle 4 Pin style lock. This is NOT for Columbia products. Key will be cut to code and ready to work in the lock. It may be used on other applications as well. Eagle Lock closed it's factory in 1975 to give you an idea of the age of the lock. SAVE 15% by ordering any two keys or more listed on the website!! Use the code LOSTAKEY in the discount code redemption box during checkout to automatically apply the savings!