Insert the impact holder, swing type tool hook. Since it swings, we respond flexibly to changes in gravity direction accompanying posture. However, when the force against the upward direction acts against the impact hooked on the hook, such as when sitting inadvertently, it easily falls off. Also, it is a simple fixed application, so it is not recommended at all for working at high places. As an item of proper use according to usage, I do not think that this one will cover all the situation.