Abstract: A protective cover for a wheel fastening member, said protective cover comprising a body having a top and a bottom, an internal hollow extending from top to bottom and surrounded by an adjacent internal surface and an external surface: the internal surface of the protective cover snugly fitting over the fastening member in use and the external surface comprising flanges to receive a visual aid for indicating the security status of the fastening member, said flanges including a gripping collar and a top collar having a plurality of vertical ribs extending therebetween to restrict the movement of the visual aid, wherein the protective cover protects the fastening member from corrosion and secures the visual aid therewith.