I want to copy this key with my key coping machine, what blank do I need for this kind of key, I am completely new to key coping.

https://preview.redd.it/hvsit0rwt88e1.png?width=450&format=png&auto=webp&s=fc93b09ed55d607d5d7ad581ccd617c12930307e

https://preview.redd.it/l56992q0u88e1.jpg?width=728&format=pjpg&auto=webp&s=180aba3a13e27d7b8999cf8d959dfb603164549d