Eduard Express Masks

Yes it is. I used it for the P-39.

how do they work? Is there a good selection?

I've only used the ones they include in their kits. They work quite well but like most masks they don't conform on compound curves as well as you might like. Not a perfect solution, but if youre having trouble with conventional canopy masking ( face it, we all do ) then they are a valuable aid.

mpmontgomery hi,
i use eduard masks extensively and on the whole like them.
first the down side: when masking compound curves they sometimes "pop-up" from one side of the curve, which is annoying, especially if airbrushing; but that's about it.
the good bit:
-massive product range: everything from canopies, camouflage patterns, to armour wheels and individual vehicle insignia/markings
-great website, where you can even view the instructions of the individual masks
-easy to use: just peel the off the backing and attch to say, your canopy
-for compound curves i tend to cut a masking tape mask using the eduard stencil to avoid loss of adhesion

their website:
www.eduard.cz

an example of what you get in a p-47 thunderbolt mask:
http://www.eduard.cz/./products/card.php?id_product=2567&name=&catalogue_nb=&type=3&pgroup=1&scale=3&product_month=&product_year=&page_start=225

and...
http://www.eduard.cz/products/pdf/nxf/xf216.pdf

i have ordered from them direct as well as via other hobby shops with no problems.

hope all that helps!!
enjoy your modelling!
regards,
nick