- A removable set of tools to aid in assembly and disassembly of a protection means underneath a vehicle, the set of tools including: - at least four guide means which are in the form of rods each having a first threaded end intended to be screwed into a threaded hole of the vehicle, enabling the fastening of the protection means to the vehicle, and a second end of each rod being intended to be positioned in one of the holes of the protection means that are intended to receive screws for fastening the protection means to the vehicle; - at least two maneuvering means each including a support means which is intended to be positioned underneath the protection means and a screw/nut connection for progressively raising, by rotation of the screw or of the nut, the support means and the protection means up to the vehicle for enabling the fastening of the protection means; characterised in that it includes two lifting assemblies each including: - two smooth guide rods each including a first threaded end intended to be fixed by screwing into a threaded hole of the vehicle, enabling the fastening of the protection means to the vehicle; - a connecting crossbar connecting the two rods of the same lifting assembly; - a maneuvering means fixed to the crossbar at an equal distance from the guide rods, the maneuvering means including a drive bar having a threaded external profile on which is engaged the support means which includes a threaded hole corresponding to this external profile, the threaded profile of the drive bar and the threaded hole of the support means forming the screw/nut connection; - an antifriction thrust bearing interposed between the drive bar and the connecting crossbar. - at least four guide means which are in the form of rods each having a first threaded end intended to be screwed into a threaded hole of the vehicle, enabling the fastening of the protection means to the vehicle, and a second end of each rod being intended to be positioned in one of the holes of the protection means that are intended to receive screws for fastening the protection means to the vehicle; - at least two maneuvering means each including a support means which is intended to be positioned underneath the protection means and a screw/nut connection for progressively raising, by rotation of the screw or of the nut, the support means and the protection means up to the vehicle for enabling the fastening of the protection means; - two smooth guide rods each including a first threaded end intended to be fixed by screwing into a threaded hole of the vehicle, enabling the fastening of the protection means to the vehicle; - a connecting crossbar connecting the two rods of the same lifting assembly; - a maneuvering means fixed to the crossbar at an equal distance from the guide rods, the maneuvering means including a drive bar having a threaded external profile on which is engaged the support means which includes a threaded hole corresponding to this external profile, the threaded profile of the drive bar and the threaded hole of the support means forming the screw/nut connection; - an antifriction thrust bearing interposed between the drive bar and the connecting crossbar.