Mayhew Bestway Tools B24380 Screwdriver Bit Set, 100-Piece

First, there's no screw driver, only bits. However, it's got every single security bit ever. AND not just security bits either, but regular bits, or bits that you can used for rusted, jammed, or treated screws. Do yourself a favor, when you buy it, keep a piece of cardboard between the sections when you close it. That way, you can keep the bits in place. It has an extender that you can use for a screwdriver or a drill. Magnetic too. Fours stars for no driver and the need for a cardboard slat. It doesn't say on there anywhere, but I'm pretty sure it's made in the USA.

This a nice kit for a good price. I am not a pro nor would I use it as much as a pro wouldso I can not speak on the long term use of holding up. What I can tell you is I build a lot of Ikeafurniture which needed a 5mm hex head. This is one of the FEW kits that has Metric Hex heads, others such as Dewaltonly make ENGLISH ones... It did what I needed and makes building Ikea stuff a snap!

The case they come in is such cheap plastic that after less than 2 years it literally crumbles in your hand like dust. Having to store the bits in a bag makes it rather difficult to find what you are looking for.

This set only gets it's second star because it is a fairly complete set of hex bits. All the bits are super soft, I was able to bend the metal flanges on a number of bits using a small hand screw driver. Maybe it's cheap enough to look at it as a bonus if you ever get a second use out of any of the bits.I'd never use these in a power drill, as I'd be afraid that it would just destroy the bit.