Hardwood Chair Back Piece, Unfinished, Lot of 4, Curved Arch Project Wood OAK.  They measure 22 1/2 inches long x 7 7/8 inches tall x 5/8 inches tall with 6  drilled holes for spindles.  I have spindles on another listing but not enough for 4 chairs.  I originally bought these to make name plaques for a front porch.  The holes at the bottom would make a great place for a hook to hang keys or hats, etc.  The front is all milled, see pictures.  Solid Oak so will stain nicely.  I have had these for 20 some years and they are a little dirty but a light sanding and they will be perfect.