Arrington Lock & Key is a locksmith company that serves residential, automotive, and commercial clients in Killeen. It provides a wide range of locksmith services, including door lock replacement, car key programming, and key cutting. Its technicians install various types of knobs and cylinder deadbolts. Arrington Lock & Key also uses several brands, such as Kwikset, Yale, and Schlage. Clients can choose from a variety of designer keys, ranging from sports teams to several branches of the U.S military.