From spingear.jp: "Wood is natural material, so color is not consistent and sometimes has knot or dark part. Please allow for it and have fun as the character of your yo-yo. This yo-yo may wobble. It is desgined for up-down play for 4-6 years old children. If you are over the age, please note that this yo-yo is not for adults. However, you can have fun by own style."
