Whisky No.7/9 12F bars drop end width?

Anyone have the whisky bars with the 12 degree flare? For a 40cm bar what does the drop end width measure?

I think this seems like a suitable bar for a bike I’m trying to build for all types of riding. Narrow and aero on the hoods for road riding then wider drop width for more leverage off road and gravel bits. The reach isn’t long too and the bar drops isn’t too steep either.