Well tool device comprising: - a mandrel device having a axial center axis; - an housing device provided radially outside of the mandrel device; - a ratchet system comprising: - an grooved outer surface area of the mandrel device; - a first locking ring comprising a grooved inner surface area engaged with the grooved outer surface area of the mandrel device, a grooved outer surface area and an axial slit allowing radial expansion of the first locking ring, where the first locking ring is engaged with the outer housing; where the ratchet system is configured to allow relative axial movement between the mandrel device and the first locking ring in a first axial direction and to prevent relative axial movement between the mandrel device and the locking ring in a second direction opposite of the first direction; where the ratchet system further comprises: - a second locking ring provided radially outside the first locking ring, the second locking ring comprising a grooved inner surface area engaged with the grooved outer surface area of the first locking ring, and an axial slit allowing radial expansion of the second locking ring, where the second locking ring is engaged with the outer housing; - a first element protruding inwardly from the inside of the housing device; characterized in that the ratchet system comprises: - a second element protruding inwardly from the inside of the housing device at an axial distance from the first element; where the first and second locking rings (40, 50) are provided axially between the first and second elements (36, 38); where the first inwardly protruding element comprises a first supporting surface for transferring axial forces between the housing device and lower end surfaces (46, 56) of the first and second locking rings (40, 50); where the second inwardly protruding element comprises a second supporting surface for transferring axial forces between the housing device and the upper end surfaces (48, 58) of the first and second locking rings (40, 50). - a mandrel device having a axial center axis; - an housing device provided radially outside of the mandrel device; - a ratchet system comprising: - an grooved outer surface area of the mandrel device; - a first locking ring comprising a grooved inner surface area engaged with the grooved outer surface area of the mandrel device, a grooved outer surface area and an axial slit allowing radial expansion of the first locking ring, where the first locking ring is engaged with the outer housing; where the ratchet system is configured to allow relative axial movement between the mandrel device and the first locking ring in a first axial direction and to prevent relative axial movement between the mandrel device and the locking ring in a second direction opposite of the first direction; - a second locking ring provided radially outside the first locking ring, the second locking ring comprising a grooved inner surface area engaged with the grooved outer surface area of the first locking ring, and an axial slit allowing radial expansion of the second locking ring, where the second locking ring is engaged with the outer housing; - a first element protruding inwardly from the inside of the housing device; - a second element protruding inwardly from the inside of the housing device at an axial distance from the first element; where the first and second locking rings (40, 50) are provided axially between the first and second elements (36, 38); where the first inwardly protruding element comprises a first supporting surface for transferring axial forces between the housing device and lower end surfaces (46, 56) of the first and second locking rings (40, 50); where the second inwardly protruding element comprises a second supporting surface for transferring axial forces between the housing device and the upper end surfaces (48, 58) of the first and second locking rings (40, 50). where the first and second locking rings (40, 50) are provided axially between the first and second elements (36, 38); where the first inwardly protruding element comprises a first supporting surface for transferring axial forces between the housing device and lower end surfaces (46, 56) of the first and second locking rings (40, 50); where the second inwardly protruding element comprises a second supporting surface for transferring axial forces between the housing device and the upper end surfaces (48, 58) of the first and second locking rings (40, 50).