Yes to all of all of his questions or yes to just one question?
Because that actually is a good question of what type of clamshell Dewalt currently uses.
Bingobelle, if you can give me the model numbers to I can quickly find you an answer.
Or you want to do this on your own, use this link.
http://www.ereplacementparts.com/I wish I could help out more, but unless you state the model numbers, I can only guess that Dewalt uses the plastic your talking about. But again, I am not so sure.
Or if you had the part number, that also works.