This is a genuine pair of Cartier Must de Cartier VLC steel clasp screws, new and sealed in original blister packaging. These screws are used to connect the strap to the clasp on some Cartier Must VLC watches.
There are photos of your screws from multiple angles.
If you are not sure if this will fit your watch or if you have any other questions, feel free to email me at Sales@TheWatchLink.co.uk. I'm happy to help!