Abstract: A one-piece electrical terminal for wires of different gauges comprising a pale portion including a pair of inner, resilient limbs arranged side-by-side in spaced apart relation with opposed edges defining between them a wire receiving slot and a pair of outer, resilient limbs arranged in respective opposite sides of and spaced from the pair of inner limbs. Insulated wire can be forced perpendicularly of its axis into a mouth of the wire receiving slot so that the edges of the inner limbs penetrate the insulation and establish permanent connection to the wire core with deformation of the inner limbs towards the outer limbs. Insertion of a small wire causes resilient deformation of only the inner limbs which remain spaced from the outer limbs whereas insertion of a large insulated wire deforms the inner limbs into engagement with the outer limbs producing resilient deformation thereof.