Are these Duelund wires good for interconnects-

Those cables would do okay for interconnects but there are much better design options for interconnects at a lower cost. The conductors and dielectric used are meh, and I don't see an attempt to shield the cable in any kind of way. The jacket choice doesn't seem to protect the conductors from moisture either.

@jaytor if you're looking for a forward presentation with more sparkle on top, look for a solid core silver wire with Teflon dielectric. This will give you what you need.

They are good for jump starting your car.

To thin for that ebm

OP, I believe there is a member of this forum who sells interconnects under the name "Acoustic BBQ" using Duelund wire. Surprised he hasn't chimed in but you can search it if you wish. 

That would be grannyring.

@williewonka What size of Mundorf Silver/Gold wire do you use for your interconnects?  1.0mm or the 1.5mm?  And would you consider trying it for your speaker cables - and if so what size and how many runs of it?

Thanks