Above is seen a Wooden Cutting Board for Ticor S205 Undermount Kitchen Sink . It is available in walnut, cherry and maple, with variations within.
Be careful when ordering as the product description differs from the title and the photo. Same thing goes for the Wooden Cutting Board for the Undermount Single Bowl Ticor S315 (maple with 3 Walnut strips). Although it looks like the same seller has it consistently described for the Wooden Cutting Board for the Undermount Single Bowl Ticor S505 (maple and walnut Split).
Just a friendly PSA about the top of the kitchen sink from Beyond The Kitchen Sink!