public static function getGoldenWrenches() {
        if(self::$goldenWrenches == null) {
            self::$goldenWrenches = [];

            $data = WebApi::getJSONObject('ITFItems_440', 'GetGoldenWrenches', 2);
            foreach($data->results->wrenches as $wrenchData) {
                self::$goldenWrenches[] = new TF2GoldenWrench($wrenchData);
            }
        }

        return self::$goldenWrenches;
    }