The RU4, 1011P Russwin key blank is a high-quality, uncut key that is compatible with a range of locksmith and key cutting equipment. This key blank is compatible with a variety of popular key cutting machines, including Curtis, Cole, Ilco, Ilco EZ, Jet, JMA, OriginalL, Star, and Taylor. With its durable construction and versatile compatibility, the RU4, 1011P Russwin key blank is an excellent choice for locksmiths and key cutting professionals looking to expand their toolkit.