The invention relates to a tool kit for levelling ceramics, made up of a separating element, a wedge and a set of pliers. The pliers have two jaws: an upper one and a lower one. The upper jaw, between the tip and the handle, has an elongate opening for the movement of a through-bolt which also passes through the lower jaw via an opening. The distance between the two jaws is adjusted by grooves and raised patterns in each of them. Said pliers are used to press on a wedge that is inserted through the opening of an arch belonging to a separating element. In additional to the conventional types, the separating elements can have a cross-shaped base or a T-shaped base according to the number of tiles that converge at said separating elements. A reinforcing element is placed between the wedge and the ceramics to be levelled, consisting of a plate that increases the surface that presses on the ceramics to be levelled.