This 4-inch diameter cutting board is all you need to do to slice a lemon or onion. There is no need to have that large cutting board out just for a small job as a lemon. Size 4 inches diameter. Good to use on a bar. We use Ambrosia Maple in our products, the variation of colors and streaks is not a defect they add Character to the product. Ambrosia Maple is one of the most unique and stunning hardwoods available today. Hailing from North America, this maple variety is characterized by its beautiful grain patterns and vibrant colors and it can contain small worm Holes. Ambrosia Maple is one of the more expensive Maples.