This item is made from hard maple burl, dyed black with lacquer and finished with a glass coat. The glass coat contains no solvents such as thinner. Size: Length 13.5 cm, Width 7.5 cm, Thickness 2.0 cm, Weight 36 grams. The interesting wood grain is superb. Handmade item by Yuji Matsuoka, a regular member of the Kogei Association. The seller is the artist. Comes with a decorative paper box and a brief biography. Thank you for viewing.