Yakamoz 16Pcs 4-in-1 Multi Long Magnetic Screwdriver Bit Set with 1/4" Hex Shank Drill Screw Driver Bits Power Tools Kit (Hex Head Allen Wrench, Torx Security, Cross Phillips & Flat Head Slotted Tip)

They work perfectly and lock in place tightly. They also seem to be sturdy.

Great for furniture assembly. Longer bits reach the hard to get to parts

I’ve had these for almost a year now. I use them five days a week. Not all of them, but the Phillips and small flat head mostly. Both small Phillips broke off and were rendered useless after only light usage. The small flathead, which I use more than any other is still going strong s as me performing well. I work on very small parts for my job and it makes my life much easier when I’m not turning hundreds of tiny screws by hand. My only issue is the durability of the Phillips heads. I am only here to make this review after a year because I don’t have much faith that my tiny flathead will last much longer. I will purchase another pack after this one breaks. Hopefully it never does.

While shopping for long driver bits I was surprised by the number of reviews that said their bits were "bent". So when these arrived, I put them in the handle and the tip wobbled. But then, I used a dial indicator and measured them to be quite straight. So, I measured the base, which was practically a perfect 1/4", but the socket on the base was .050" oversize! So the bits wobble a bit. This mismatch is not an error on the part of the handle manufacturer, rather it is intentional to make insertion of the bits easier. You don't see the wobble in shorter bits, but with this long lever, it becomes obvious. Once you have the bit inserted into the fastener, so that it is fixed at both ends, the wobble disappears.These work just fine.

if you are sick and tired of dropping screws this set is for you. Magnetic tips solve that issue.

These are not hardened. The Phillips deformed somewhat easy.

I now take them everywhere when I need to fix something to installation. The megatic and length are so helful, I wished that I had found them years ago. Screw now stay on the bit and I can actually reach the screws with plenty of leverage. Especially trying to change door handle. :) Recommened.

Work as expected!!!