I only gave it 2 stars because of how quick the delivery was, other wise I would have given one star. I used the screwdriver to unscrew the little screws on the back of my macbook and on the 4th screw, the screwdriver chipped right off, while I was unscrewing!! I can understand it occurring while screwing, it being a delicate size etc.. and if force is used, it could cause it to distort, but 1) I was UNSCREWING, how could this cause any harm to the screwdriver? Simply the tightness of the screw on the macbook caused it? On the 4th screw I have ever used the screwdriver on? 2) It didn't just distort, a little piece broke right off the screwdriver, making it completely useless.. I may be able to file it down or something but these should not be on the market.. Unless it was just a fault on this one.. I wouldn't chance it again.