It is very nice to be able to use four kinds of + - drivers with that small size. As a part I would like to improve by only one point, since there are few places to grasp when changing from a small size to a big size, I think that there is some countermeasure if the finger hurts.
As I usually opened the control panel and connected the computer etc., I put ordinary drivers in pants pants, so holes were coming and I was getting angry at home. I wish I had bought it before this if it was so convenient. I think the purchase price is also very good.