This dovetail jig can make half blind dovetails in wood up to 12 inches wide and 1.25 inches thick. It is in very good condition. It was made by Reliant but is very similar to a Rockler 63061 see
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It even has the new model sidestops from Rockler (#63061). Included are the
7/16" router template bushing and a used dovetail bit. The original instructions are also included. Asking $50