Material: Oak Dimensions: Diameter 13cm x Height 5.5cm Coating: Coated with food sanitation law compliant penetrating urethane oil (Kikogame Ace). ☆ Handmade, so there may be slight variations in dimensions and shape. ☆ Being made of wood, avoid soaking in water for extended periods. ☆ Avoid using in dishwashers, microwaves, and ovens.