Ideal for casual screwdriver

I can not comment on the suitability for professional use, but the principle is just awesome for the unsuspecting opportunity screwdriver does not look at first glance of the screw, which spin it requires. Through the folding mechanism you get the variety of shapes presented in a clear and easily find the right bit fail by simple visual comparison. So you quickly to the goal, without having to make the slightest every thought to make it now is obscure file type screw again here.