Four Size of them: It Is very unique products, root material is very limited,less then 1% and tree age should be over 100 years. We artiscians carve this kind of products by Shanmu Root,completely by their imagination and according to the root shape. There is no two works are same just like huma's fingerprint. They are looked very unique, natural, artistry. So they could be used as decoration in your house but aslo household articles. It is getting mor and more difficult to collect material day by day.