A tool head cover is provided for a rotary tool, which secures over a portion of the tool head and a portion of the rotating member extending therefrom to protect the tool during operation and to protect the user. The device comprises a shank cover member that extends over the rotating member of the tool, whereby the shank cover member has an outer sidewall and a hollow interior portion. The cover may comprise a unitary element that secures to the tool, or alternatively the cover may comprise a multi-component assembly that secures over the tool head using two or more elements. Several embodiments are disclosed. In each embodiment, the cover secures over the junction between the tool head and the tool rotating member, whereby the tool is rotary tool such as a ratchet wrench or powered driver tool.