As soon as I received the set, I immediately had to put it into action - I assembled a high chair with euro screws (the hexagon that came with the kit fell into disrepair - and the Bosch bit calmly twisted everything). Then I dismantled the metal rack - I also had to make an effort, but the bits coped. The set is good, the screwdriver is convenient, the bits are strong. What more could you want? Except the price is cheaper.