The only problem I find with this is that finger tightening the bits is sometimes not quite enough to hold them in place. Several times I've had the bit rotate in the handle while the screw stays in place. Also, because the handle is hollow, I've had bits get pushed down almost into the handle and have to use pliers to extract them. I've only used it on computers/laptops, so it's not like I'm doing anything heavy duty with it. Apart from that, I'm pretty happy with this product, I really like the rotating cap on the end of the handle. Genius!