I hate losing my screw drivers and tools. My friends get them mixed up or use the wrong ones. So these kits are the one thing that keep me from loosing my tools and keep me and friends from using the wrong sized tools.I was working on a plastic gear shifter for a racing game, when 2 of these screw drivers from the kit broke.I already have had the larger philips heads stripped from normal wear and tear which is not a sign that this is a good quality product. Then when unscrewing a screw from a piece of plastic while working on the above mentioned gear shifter, i had 2 of the flat head screw drivers come loose on me.So now i have 2 ruined screw drivers, and 2 others that are useless because the head spins around and the grip just freely spins around it.Only buy this product if you have the money to throw away or for some reason cant find another kit to buy.Again this is a poor quality set, buyers beware.