We know that you're picky about the workmanship, and so are we. We, several like-minded generation Y set up a workshop and hope to control the best design and product quality as much as we can. The wooden part is made of North American FAS level Black Walnut. It's high quality and classy. It has been coated with wax oil entirely for a good maintenance. The wood wax oil is natural plant extraction products. It does not contain phenol formaldehyde, heavy metals and other harmful chemicals. It is natural and environmental surface wiping agent.