<p>A work head (100), capable of being mounted on the output shaft (23) of a power tool; the work head (100) is provided with a mounting unit (11) mated with the output shaft (23); the mounting unit (11) is provided with a central hole (141) thereon with a center; the mounting unit (11) is also provided with an internal mounting hole (14) and an external mounting hole (15) thereon; the external mounting hole (15) is longitudinally located outside the internal mounting hole (14); the internal mounting hole (14) comprises at least two protrusions (142) extending outward from the central hole (141); the external mounting hole (15) comprises at least two openings (151); the openings (151) are distributed on the circumference with the center as the circle center; each opening (151) comprises an internal segment (153) and an external segment (154) sequentially arranged in a radial direction; the maximum width of the internal segment (153) is greater than that of the external segment (154); the mounting unit (11) has an outer edge (111), and is provided with an indentation thereon penetrating from the outer edge (111) to the central hole (141). The external mounting hole (15) and the internal mounting hole (14) can accommodate at least two different types of output shafts, thus improving the universality of the work head.</p>
