This is a set of 8 Japanese oak branches. These are natural Japanese oak branches that stag beetles and rhinoceros beetles love. They are branches that are left over from the felling of Japanese oak trees for shiitake mushroom logs. Please use them as perches for stag beetles and rhinoceros beetles. The length is around 22 cm. There are none shorter than 20 cm. They are pesticide-free, so you can rest assured. Please understand the above before purchasing.