I think a Pearl Duck Double Duck is a razor, right? You may well get your answer here, but there is a dedicated subforum for razors which may work better for you.
Yeah, a wedge means it's not got much hollow in the blade profile. There are degrees of wedge also. ½ hollow, ¼ hollow, full wedge, etc. A full wedge is basically like a triangle shape with around 16°-18° included angle at the acute end (when viewed from the end of the blade).
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