The grass cutting head (1), configured for rotation around a rotation axis, comprises a housing (3) for a cutting line (F)； a space (5) inside the housing for winding a stock of cutting line； at least one hole (3B) in a side wall (3A) of the housing (3), through which the cutting line (F) passes from the inner space (5) towards the outside of the housing； At least one cutting blade (21) with at least one cutting edge (23) is associated with the housing (3) of the grass cutting head (1).
