This is Hokkaido-grown birch burl wood. It's always popular for crafts and is perfect for things like lathes. In recent years, it's become so sought-after that groups called "burl hunters" have emerged to illegally harvest it, leading to high prices. Size: Approximately 300 x 200 x 30 mm Length and width are the maximum values. Thickness is a flat 30 mm. Fine Wood Finger Jointing Craft Woodworking Woodturning Woodturning Pen Blanks Wooden Pen Ballpoint Pen Fountain Pen Mechanical Pencil Handle Material Landing Net Craft Knife Handle Grip Parquetry Inlay Flower Stand Display Stand DIY