This is one of those hollowforms that is self cleaning as you hollow it. It's a Gambel Oak root ball. The top of the form is the bottom of the root, the tree grew out from the bottom of the form. Very hard on hollowing tools having to dig out 20-30 rocks in the process. It's 10 1/2" wide, 8" tall. Nothing dainty about it with thick sides and bottom and kind of a gnarly finish.