The RU1, 1011 Russwin Key is a high-quality key blank that is compatible with a variety of locks and lock systems. This uncut key is perfect for locksmiths and key cutting professionals who need a reliable and versatile key blank for their clients' locks. This key blank can be cross-referenced with the following manufacturers and part numbers: Cole RU1, Curtis RU-1, ESP RU1, Ilco 1011, Ilco EZ RU1, Jet RU1, JMA RUS-7, Original 852R, Star 5RU1, and Taylor 55. With its compatibility with a wide range of locks, the RU1, 1011 Russwin Key is an essential tool for any professional locksmith or key cutter.