If you don't know why you'd want one of these then you don't need one. :) This is the first thing I've taken from concept to actual thing. It's made up of four parts: The handle extension, handle, the blade holder, and the blade. I purchased some 16 gauge brass from Amazon. You'll need to glue the pieces together. I used epoxy on the one pictured here. I used cyanoacrylate on another and both seem to be holding up well after light use. The scraper pictured was sprayed with Plasti Dip to prevent the thing from sliding around when using gloves.