An arrangement for positioning in and/or on an implant (1) comprising an abutment post (2) and a conical cap (4, 4') which can be connected to this, wherein the abutment post (2) has a conically running section (5), the conically running outer surface (6) of which is configured to be complementary to a conically running inner surface (7) of a conically running recess (8) of the conical cap (4, 4') in such a manner that the conical cap (4, 4') can be placed on the section (5) and receives this at least in some areas, is provided with a view to the object of positioning a conical cap in a correct position with as few working steps as possible on an abutment post and connecting to this as permanently and loadably as possible, characterized in that the inner surface (7) of the conical cap (4, 4') and the outer surface (6) of the abutment post (2) are inclined relative to one another in such a manner that the conical cap (4, 4') can be connected to the abutment post (2) by a friction locking between the inner surface (7) and the outer surface (6) in a tension-resistant and/or captive and/or safe-to-chew manner, wherein the conicity of the section (5) differs from the conicity of the recess (8). A tool (24) enables the fixing of the conical caps (4, 4') on an abutment post (2). A set comprises the tool (24) and the arrangement and/or an abutment post and/or a conical cap.
