Scaffold tag pocket (scaffold tag sleeve):

When scaffolding is being erected, the scaffold tag holder must clearly state that the scaffolding has not yet been cleared for use. Scaffolding must always pass an inspection prior to use. After such an inspection and approval, the relevant scaffold tag is placed in the pocket, which is subsequently attached to the scaffold. These sleeves are fully weatherproof. The hole at the top of the pocket lets you hang it on the scaffold using a cable tie.