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Different Types of Key Cuts For Cars Whether you're getting your keys cut or replacing keys that have been lost you'll want to get the best quality possible. You need to ensure that the key fits perfectly into the lock and can start your vehicle without issues. The edges of traditional keys are cut to align with the pin patterns of locks to allow access to them. The most advanced keys are laser-cut, and offer several security advantages. Sidewinder Keys Sidewinder keys, often called internal cut keys, are more advanced key technology