It's a very essential tool for pu'er cake/brick. You can use it for storage, breaking up a pu'er tea cake. When breaking cake/brick of pu-erh tea, use this convenient tool to collect loose leaves fallen from the cake and pour them into a container easily. You will save more leaf and keep your table clean. You may also use this helpful tool to inspect and select other loose tea. The opening at the corner helps you to transfer leaves into tea pot, cup or other containers.