Does anyone know what sort of bend curve these had?
I imagine pretty CC (it says constant curve haha)

Or who made them? Will be a "re-branded something else" I'm sure....
"Made in Italy / barcode" is written on a little silver sticker so I am thinking Triana - made
Bumpy outside finish - ribbed -

Decrepit posted here once that his was about 10% , so C with slightly hard top. Making me think that with CC slightly stiff top it could be a good mast for Blades...... any thoughts?

Or given it is a 2008-10 age mast, has anyone used it in newer wave sails...? Thats my intention. Maybe..

Stuart Bell Sails sold the hypersonic as I recall.

I suggest you ask them for information but as far as I am aware they were typically constant curve. http://www.stubell.com.au

Also ask Mark at SurfSail Australia as he may be able to confirm.

I think check out this supplier as well, who appears to suggest they are constant curve : jaysails.com.au/product/masts/

Let us know what you find out.

I've used a hypersonic c75 for the last 4 seasons on my KA Sails. Seems to work well.
KAs are branded as Constant Curve

^^ RDM?

that is helpful as its nice to know it is middle of the road.

KA might be a goer then also :)

Yep. RDM