| 摘要 |
A base carries a positionable hand grip. A cylinder is rotatably mounted on the base and carries multiple bits for driving various types of fasteners. An ejector rod on the base propels a selected bit from the cylinder through a drive tube to an exposed position. A base carried spindle imparts rotational movement to drive component and the drive tube. Magnetic components assist in positioning and retention of the screw driver bits.
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