For use with: Case Various tractor doors. Fastec Various products using key codes between: CF301-CF351, EF301-EF351, HF301-HF351, FIC Various products using key codes between:, CF301-CF351, EF301-EF351, HF301-HF351, Kencon Various products using key codes between: CK301-CK351, Southco Various products using key codes between: 301-351, Under Cover Various truck bed cover locks.