Agricultural equipment comprising: - a frame configured to be hung on a tractor; - a power connector fixed to said frame and configured to be connected to a tractor power take-off; - a rotor shaft fixed to said frame in a rotatable manner with respect to a rotation axis (A); - a transmission unit fixed to said frame and connected to said power connector , for receiving and transmitting power to a median section of said rotor shaft for actuating said rotor shaft ; said transmission unit comprises a head assembly which has: - a casing ; - a first conical toothed wheel fixed to said casing in a rotatable manner according to a primary axis (B) perpendicular to said rotation axis (A) and connected to said power connector ; - a conversion member having a hub , a second conical toothed wheel and a third toothed wheel , said second and third toothed wheels being keyed onto said hub which is fixed to said casing in a rotatable manner according to a secondary axis (C) parallel to said rotation axis (A); said transmission unit further comprising a lower unit which has a fourth toothed wheel connected to said second toothed wheel and which lies on a transmission plane (D) where further lies said primary axis (B); said lower unit being fixable to said head assembly such that said primary axis (B) and said third toothed wheel lie on said transmission plane (D); said casing and said conversion member being configured to be assembled in a first configuration and in a second configuration, according to which, following a rotation in an operating direction (E) of said first toothed wheel - in said first configuration said conversion member drives said fourth toothed wheel into a first rotating direction (F); - in said second configuration said conversion member drives said fourth toothed wheel into a second rotating direction (G) which is opposite to said first rotating direction (F). - a frame configured to be hung on a tractor; - a power connector fixed to said frame and configured to be connected to a tractor power take-off; - a rotor shaft fixed to said frame in a rotatable manner with respect to a rotation axis (A); - a transmission unit fixed to said frame and connected to said power connector , for receiving and transmitting power to a median section of said rotor shaft for actuating said rotor shaft ; - a casing ; - a first conical toothed wheel fixed to said casing in a rotatable manner according to a primary axis (B) perpendicular to said rotation axis (A) and connected to said power connector ; - a conversion member having a hub , a second conical toothed wheel and a third toothed wheel , said second and third toothed wheels being keyed onto said hub which is fixed to said casing in a rotatable manner according to a secondary axis (C) parallel to said rotation axis (A); said transmission unit further comprising a lower unit which has a fourth toothed wheel connected to said second toothed wheel and which lies on a transmission plane (D) where further lies said primary axis (B); said lower unit being fixable to said head assembly such that said primary axis (B) and said third toothed wheel lie on said transmission plane (D); said casing and said conversion member being configured to be assembled in a first configuration and in a second configuration, according to which, following a rotation in an operating direction (E) of said first toothed wheel - in said first configuration said conversion member drives said fourth toothed wheel into a first rotating direction (F); - in said second configuration said conversion member drives said fourth toothed wheel into a second rotating direction (G) which is opposite to said first rotating direction (F). <EOS>