Very poor quality. The drills do not drill and the bits break inside the screw head. Even some loose bits I have are better

I give it a low rating because it is misleading. The metal drills cannot even penetrate a 2mm sheet metal no matter how hard you try, logically something would happen with sharpening. However, they are completely smooth and do absolutely nothing. They work for bricks, but it is not comparable to a serious drill. For wood, they are fine for simple things, but it has few sizes.
They are not suitable for serious work, they are just a nice case

Useless collection completely since all the drills are of terrible quality... both in iron and in concrete 5 drillings and that's it... terrible quality completely