Summary Number 7 version. allows for mounting a Wltoys v262 style camera mount and battery under a Tarantula X6 so the battery adds weight to get rid of the jello in the cam that the Tarantula gets, without adding weight to the whole quad. Mounting screw holes are still a tad large so screws pull right through.. nylon washers take care of that issue,.. otherwise it's a great fit and everything lines up. will probably do a seven point X version and fix the screw holes as well as thinking of knocking out more in the holes to lighten up even more...