Old Straps fit the Watch Ultra, right…?

Will my old straps still fit on fit Apple Watch Ultra?
Apple Watch Ultra: purchased via Apple for $856.93 (including Utah tax)
The strap - is black leather, a custom-created band for my Apple Watch 6 back in 2021 by The Custom Strap Guy (you can find them on Instagram - https://www.instagram.com/customstrapguy/)

#applewatchultra #customstrapguy #watchband #applewatch #outdoors #hiking #peterherget #gadgetsanonymous #themanwithtwowatches