Surgical tool for knocking out and/or inserting of prostheses (1), in particular joint prostheses, in particular hip and/or shoulder prostheses, with in particular continuously curved head (2) of the tool, which exhibits a passage (3) for the seating of a prosthesis neck (4) and a bolt mechanism, which blocks detachably the neck (4) of the prosthesis in the passage (3), whereby the bolt mechanism exhibits an blocking element (5) intervening in the passage (3), which interference position is adaptable to different diameters of the neck (4) of the prosthesis, whereby an adjusting force is to be applied on the blocking element (5) by means of a adjustment member (6), where the manipulation of the adjustment member (5) is to be arranged by an adjustment element (7) outside of the operation field with distance to the blocking element (5).