Pie base

This base is 12" round.  The base has 1/5th of the circle cut out/removed as seen in the photo's.  The base is shipped with both pieces.  The larger 12" base and the 1/5th cut out portion.  The base is approximately 3/4" in thickness and has a single 1/16" slot for your reed.  This base comes in multiple wood types.  

Images show base in oak and ash hardwood.