An Infinity Edge end-grain walnut board from JK Adams (SKU IE-1610-W). Official specs are 16" x 10" x 1 1/2". Walnut finished in their mineral oil and beeswax, North American hardwood, made in the USA, lifetime guarantee. Official page lists the infinity edge design. End grain is listed as easier on a knife edge and less likely to show knife marks. Walnut is a softer, more absorbent hardwood that lightens with light. Specs from JK Adams' Infinity Edge walnut 16x10 page.

Handwash with warm soapy water and dry it. Do not soak, dishwasher, or microwave. Oil and/or beeswax when the wood feels dry.

Same Infinity Edge board in walnut.