A powered tool comprises a main body unit (1) and a functional attachment (2 or 12) having a working appliance (10). The main body unit (1) and the functional attachment (2 or 12) are provided with complementary inter-engageable connectors (7, 8 or 7, 18), and the main body unit is provided with first and second switches (5, 6) for controlling the supply of power to the working appliance (10). The main body unit (1) and the functional attachment (2 or 12) are provided with power transmission means for transmitting power to the working appliance (10). The power transmission means is such that actuation of the first switch (5) or actuation of both switches (5, 6) is necessary to enable the supply of power to the working appliance (10).
