Abstract: A servicing kit for chain saws comprising nested compartments which collectively have an external symmetry with respect to the longitudinal bisector of the structure, said compartments having interior walls, one of which projects into the interior wall of the other to an extent such that the ratio of the volumes of the compartments to each other is approximately two-to-one, a compartment included between the interior walls constituted by a diagonal depression in one of the walls which terminates short of the bottom and is open at the top and a carrying handle at the top.