| 摘要 |
A driver heads barrel for a precise screwdriver includes a handle, a stem, and a cover. The handle has a chamber to accommodate a stem and screwdriver heads therein. A groove is formed close to an outer end of the chamber. A reverse cone-shaped disc is formed at an inner end of the stem. The stem has a plurality of longitudinal partitions thereof. The cover has a barrel extending downwardly from one end. A ridge corresponding to the groove of the chamber is formed on the barrel. The disc of the stem is secured into the inner end of the chamber of the handle. The screwdriver heads are accommodated between the partitions and the chamber. The barrel of the cover is inserted into the chamber with the ridge engaging with the groove. The cover is pivotally connected to the outer end of the chamber of the handle.
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