Koa is a large evergreen hardwood, now rare in Hawaii. 7 1/2" x 13 1/2" This bowl was Hand-turned and created by R.W. Butts, a professional, local artisan woodworker who has received numerous awards and accolades for his work. His craftsmanship and quality are second to none. He uses woods grown in Hawaii for discriminating tastes and lovers of Hawaiiana.