Here's all the different snath wrenches I could round up. The last two pictures are a salesman sample snath on part of the scythe handle with the attached snath wrench. The snath fastens the scythe blade to the handle.
(http://i222.photobucket.com/albums/dd3/buswrench/message-board/snath-wrenches-1.jpg)
(http://i222.photobucket.com/albums/dd3/buswrench/message-board/snath-wrenches-2.jpg)
(http://i222.photobucket.com/albums/dd3/buswrench/message-board/snath-sample-1.jpg)
(http://i222.photobucket.com/albums/dd3/buswrench/message-board/snath-sample-2.jpg)