Inspection tool for inspection of a hole of a metallic lug, comprising, - a first arm comprising a first lateral part (1.1) with a first lateral part end (1.1.1), the first lateral part end (1.1.1) being configured to be in contact with the hole of the metallic lug, a central part (1.2), and a second lateral part (1.3) with a second lateral part end (1.3.1), the second lateral part end (1.3.1) being configured to be in contact with the hole of the metallic lug, the first lateral part (1.1) and the central part (1.2) forming an angle, the second lateral part (1.3) and the central part (1.2) forming an angle, and said central part (1.2) comprising a guiding cavity, - a second arm comprising a guiding cavity and two ends (2.1, 2.2), each end (2.1, 2.2.) comprising respective guiding projections (2.3, 2.4), - a third arm, comprising a guiding cavity, a first end (3.1) and a second end (3.2), the first and second end (3.1, 3.2) being configured to be in contact with the hole of the metallic lug, and - a housing element comprising a first housing part (4.1), a second housing part (4.2), and a guiding projection (4.3), wherein the first arm, the third arm and the housing element may vary their position independently of each other in relation to the second arm; the guiding projections (2.3, 2.4) of the second arm are linked to the first arm and third arm through the guiding cavities (5, 7) of each first and third arms (1, 3) respectively, such guiding projections (2.3, 2.4) being configured to slide along said guiding cavities (5, 7); and the guiding projection (4.3) of the housing element is linked to the second arm through the guiding cavity of the second arm, such guiding projection (4.3) being configured to slide along said guiding cavity. - a first arm comprising a first lateral part (1.1) with a first lateral part end (1.1.1), the first lateral part end (1.1.1) being configured to be in contact with the hole of the metallic lug, a central part (1.2), and a second lateral part (1.3) with a second lateral part end (1.3.1), the second lateral part end (1.3.1) being configured to be in contact with the hole of the metallic lug, the first lateral part (1.1) and the central part (1.2) forming an angle, the second lateral part (1.3) and the central part (1.2) forming an angle, and said central part (1.2) comprising a guiding cavity, a first lateral part (1.1) with a first lateral part end (1.1.1), the first lateral part end (1.1.1) being configured to be in contact with the hole of the metallic lug, a central part (1.2), and a second lateral part (1.3) with a second lateral part end (1.3.1), the second lateral part end (1.3.1) being configured to be in contact with the hole of the metallic lug, the first lateral part (1.1) and the central part (1.2) forming an angle, the second lateral part (1.3) and the central part (1.2) forming an angle, and said central part (1.2) comprising a guiding cavity, - a second arm comprising a guiding cavity and two ends (2.1, 2.2), each end (2.1, 2.2.) comprising respective guiding projections (2.3, 2.4), a guiding cavity and two ends (2.1, 2.2), each end (2.1, 2.2.) comprising respective guiding projections (2.3, 2.4), - a third arm, comprising a guiding cavity, a first end (3.1) and a second end (3.2), the first and second end (3.1, 3.2) being configured to be in contact with the hole of the metallic lug, and a guiding cavity, a first end (3.1) and a second end (3.2), the first and second end (3.1, 3.2) being configured to be in contact with the hole of the metallic lug, and - a housing element comprising a first housing part (4.1), a second housing part (4.2), and a guiding projection (4.3), a first housing part (4.1), a second housing part (4.2), and a guiding projection (4.3), the guiding projections (2.3, 2.4) of the second arm are linked to the first arm and third arm through the guiding cavities (5, 7) of each first and third arms (1, 3) respectively, such guiding projections (2.3, 2.4) being configured to slide along said guiding cavities (5, 7); and the guiding projection (4.3) of the housing element is linked to the second arm through the guiding cavity of the second arm, such guiding projection (4.3) being configured to slide along said guiding cavity.