Very nice condition!  Your purchase is for ONE 27" x 12" x 1-1/2" Extension Wing. 

Will work on many Craftsman 113.xxxxxx  & 315.xxxxxxx series table saws with 27" deep tables. Wing is symmetric and can be used on the left or right side.

Check hole spacing before purchasing ... Holes are at 1-1/8", 9-3/8", 17-5/8" & 25-7/8" as shown in the phots.  

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