I rarely see anything other than Kimbro servo savers on any 1/12th scale. But you need to make sure you get the right one. The white one is for Futaba servos while the grey or off-white one is for servos with the Airtronics spline. As for the screw if you use a cap head screw instead of a button head it will fit down inside the servo saver. However I've had issues with the screw head pulling through the soft plastic of the servo saver so I don't go this route. Usually I use a longer screw with a washer to make sure it holds well. Those concave washers for counter sunk screws work really well and look pretty cool.