Yale Cylinder is the latest security cylinder from Yale is the ultimate lock to choose while securing your homes or workplaces. The high security dimple cut flat key is reversible. This makes it easier to use and the extra keys can be ordered using a key code on the ID tag supplied. Yale has been the brand behind locks of every design and function in over 125 countries. As one of the oldest international brands, today's Yale is among the best-known and most respected names in the lock industry, with millions of Yale locks in use worldwide.