A tool kit for accommodating two tools having different sizes is provided including a tool case having a base member, a lid member hingedly connected to the base member, and a tool cavity formed by at least one of the base and lid members and having an inner surface. The tool kit further includes at least one adapter fittable in the tool cavity and having an outer surface that corresponds to the inner surface of the tool cavity, wherein the inner surface of the tool cavity corresponds to an outer periphery of the first tool such that the first tool is securely retained in the tool cavity, and wherein the inner surface of the tool cavity and the outer surface of the adapter received in the tool cavity correspond to an outer periphery of the second tool such that the second tool is securely retained in the tool cavity.