An insertion tool for grasping an object, the insertion tool comprising: a tube having two stabilizing tips at an end of the tube, the stabilizing tips parallel to each other； a grasping head having a grasping tip controllable to move axially relative to the stabilizing tips away from and towards the tube, wherein the grasping tip is insertable along a first side of an object for grasping the object by relative movement of the grasping head towards the tube in order to tighten stabilizing tips against a second side of the object and when grasping the object, the grasping tip together with the stabilizing tips provide three hubs of contact with the object, wherein when grasping the object, a longitudinal axis of the insertion tool is substantially perpendicular to a longitudinal axis of the object.
