Haha, you are too kind.

Does this seem like the right sort of file, it says:

This double cut file is tapered in width and thickness. Double cut top and bottom - Both edges are single cut.

O_o

http://www.amazon.com/Grobet-American-Pattern-Flat-Bastard/dp/B00K7BEI4Q/ref=sr_1_1?s=hi&ie=UTF8&qid=1440727340&sr=1-1&keywords=grobet+12%22+bastard