| 摘要 |
A rotary tool includes a tool holder, a reversible bit, and an outer sleeve. The tool holder includes a socket and a shank. The socket includes an opening extending rearwardly from an end thereof. The shank is integral with and extends rearwardly from the socket and includes a non-circular cross-section. The reversible bit includes an inner sleeve, a first reversible bit driver, and a second reversible bit driver. The inner sleeve is disposed within the socket and rotates with the tool holder. One of the first and second bit drivers contains a bit having an end extending axially out of the socket opening. The outer sleeve is disposed over the socket and includes a first end having an opening. The bit end extends outwardly beyond the outer sleeve opening a distance equal to a desired depth of a drywall dimple.
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