I think Excel blades and knives are made in the USA. I use them myself and love them, but here's a link http://www.amazon.com/dp/B0006N6WTO/?tag=atomicindus08-20 .
Good luck.
Probably are, but I think the American Lines are a bit more expensive for some reason.That set looks exactly like the American Line ones - only thing different is the tray it comes in. I wouldn't be surprised if they are made by the same company.
The X-acto razor saw I got in a set while in Jr High school finally wore out.
I bought a replacement at Hobby Lobby & told them I hope this one lasts 51 years as well.
I threatened to give my granddaughter the receipt "just in case".
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Edit: I just found the same set I bought from Cripe, but now they are selling the American Line branded version, not the General branded version I bought. Looks exactly the same and says "Made in USA"...
http://www.ebay.com/itm/American-Li...e-Set-With-10-Blades-US-66-0547-/400472832257
...The one I tend to go for though, is a homebuilt by a guy I worked with many years ago who simply went to the shop with some aluminum round stock, which is easy stuff to find in most older chemistry labs...