A device that facilitates the support of a post or shaft in such a way that the post is connected rigidly to a foundation or otherwise connected to a fixed position. If a condition arises that causes the post to become stressed physically the device will allow separation of the post from a mounting on the foundation or fixed position before the said post is physically damaged. The post itself may be round, square, rectangular, channel shape, or any other shape in profile. In some cases the post is the primary support for such things as roadside sign posts, signs, signals, lights, warnings, or markers, that are commonly held by the roadside in a fixed and elevated position so that they are easily visible to passing motorists, cyclists, or pedestrians. The device can also be used to support other types of signs, signals, or devices unrelated to traffic or transport.