| 摘要 |
The accessory comprises a shaft (1) and a sleeve (2) with a polygonal socket (7) for receiving a nut for an expansion bolt. The shaft has a percussion piece (13) at its front end. A bayonette coupling (8, 9) and spring (12) enable the sleeve to adopt a first position where the percussion piece can strike the bolt, or a second position where torque is transferred to the nut via the sleeve. Twisting the sleeve relative to the shaft by hand switches it between the two positions. |
