This question is going to seem very basic, perhaps even elementary to most. but, I am curious about the best tool or tools to use for removing and installing screws into a laptop. The reason I am bringing this up is because of a youtube video I recently watched on this subject. The instrument used the demonstrator did not look like a standard flat head or philips screwdrive. It had a silver appearance from bottom to top and a flat head at the top. The bottom 50% of the instrument had the appearance also of being adjustable, thus, allowing the user to turn the laptop screw either clockwise or counterclockwise. I apologize for my vague description of this instrument. I would google it, but, I am not sure what this instrument actually is called. Hopefully, someone will be able to make sense of my vague description here and offer some suggestions in terms the name or catorization of this instrument.
Thanks in advance for any attention given to this question.