Sandvik Coromant CoroKey Inch is a free catalog App for iPad that is designed to offer you the best tools in your machining applications that are easy to choose and easy to use. 

This will provide engineers, programmers and machinists a convenient resource for finding the right inserts for your drilling, turning, threading and milling operations. CoroKey offers first choice recommendations for all material classifications in Steel, Stainless Steel, Iron, Nickel based alloys Super alloys and hard materials. With CoroKey you get the safe, reliable cutting data right on the first cut. 
The CoroKey App considers the work piece material and the type of operation to be performed and will guide you to the correct grade and geometry for your specific material group. 
The CoroKey insert guide is based on the principle “easy to choose, easy to use” and helps you to select the best insert for the job using this basic information. For metric measurements, please refer to "CoroKey" on App Store.