This authentic Omega Seamaster 007 Spectre NATO watch strap (reference CWZ003210) comes with the original Omega stainless steel buckle and is designed to fit watches with 21mm wide lugs.
This strap is in good condition and I have given you clear images of the strap from multiple angles to help you see the quality before ordering. The strap in the photos is the exact strap you will receive.
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!