This kit includes a wide range of both Metric and English sizes of drivers and case-opening tools in a well-organized box that securely latches closed. It has Security bits up to the Torx T20S that opened up my Panasonic microwave oven for door-latch adjustment! Definitely a Wow! It's compact and takes up little room in a suitcase so you can take it along on trips if you are as nutty as I.Qualitywise, the handle and extensions are nicely made and comfortable, except that when used in the classic jeweler's grip (forefinger in the rotating top and the shaft turned by the second finger and thumb), the rubber O-ring grip is too far down the shaft for comfort on my Medium to Large hand. I can easily rotate the driver using steel surface, so no biggie for the torque these tools need to deliver. The bits are a little loose in the tool handle sockets, but are held securely by a magnet in each socket so they don't slip out in use. The handles and bits are very well finished. The angled tweezer is a bit roughly finished by comparison, but that's easily forgiven if you need to remove/replace a micro ribbon connector on a circuit board. The bits are not magnetized, making it more difficult to use them. A silly plasticky magnetizer/demagnetizer is included that can weakly magnetize individual bits--I guess by stroking each bit with the device--if you want them to hold tiny screws for you, and are not afraid they will harm electronic circuits. By the way, they can't.That myth came from the days of beautiful Swiss tick-tock watches that contain unbelievably small gears and springs that could, indeed, be affected by magnetism. Modern electronic devices are not. MRI machines, for example, have very complex electronics working tirelessly next to huge superconducting magnets far, far stronger than imaginable when I got into science.I routinely keep small neodymium rare-earth magnets (NOT available at Walgreen's, but available on Amazon) in my tool cases; they are VERY handy for catching and holding tiny parts that try to escape. I drop one intoto a metal tray I work over, or to a large screwdriver blade to make a device to catch or to pass over a rug to extract runaway parts. Look for something like "Neodymium Rare Earth Ring Magnets 1/2 Inch x1/4 Inch Countersunk" ("Ring" and "Countersunk" mean they have a central hole so you can screw them into wood panels as strong mounts or catches. I have used these tied to a string to easily fish a cable down inside a wall, or across a ceiling by dragging a second magnet underneath the ceiling to pull it to a ceiling fan cutout.Safety Note: Neodymium magnets are ASTONISHINGLY STRONG. Do not let children play with these! Do not let adults play with these! A single one is pretty safe, just unpredictable. Two will try to jump together with enough force to break themselves or painfully pinch skin. They are extremely difficult to separate. Swallowed, a pair will try to do this even if they are in adjacent loops of the intestines, necessitating emergency surgery. This has led to death of curious children. Really.Great set, but the printed symbols intended to help you identify each bit are ... nearly useless. A few types are easily identified quickly but distinguishing between similar bits is tough without carefully examining the differences.Plus, the families of bits aren't all grouped together, some are suddenly discontinued with the rest of that type relocated halfway down the case for no apparent reason. The magnetizer is extremely weak too, unfortunately.This set does have more of what I need than others though, so I'm more or less satisfied for the price.Returned it-- Was to many tools for what I was using it for.lots of bits... that what you bought it for, right? well this one has itNot the best quality bits but certainly not bad for the price either. Even using these every day for repairs they should last a while but they definitely can't be compared to more expensive Wiha or even the iFixIt kits.Just used this product to fix my sons Nintendo switch. Worked well. Read a lot of reviews about the bits shredding to easily. I will use again for my ps4 we will see how it holds.I use this often. It has all of the screw tips you'd ever need. I am happy I got it.Good variety of bits, they all work well. Set had the exact bit and size I was looking for. However there was a huge problem while using it. The provided Driver is minuscule. It is so slender and you will not be able to loosen tight screws - slips right out of your hand. It ruins an otherwise good set if you cannot grip the driver and actually use it! Will have to buy a different driver to use with this.