An electrically driven rotatable agricultural tool comprises an implement carrying rotor (1) to which magnets (9) are attached. The rotor rotates about a shaft (3,3b). A plurality of electric coils (7) are arranged which are stationary with respect to the rotor so that when an electric current passes through the coils (7) under the influence of the magnetic field of the magnets (9), rotor (1) rotates and thus the implement carried rotates.
