I ordered this set of bits and drilled mainly due to the presence of a twister nozzle in the kit. But, in general, a set of bits and drills also pleased. The quality is quite consistent with the price and is quite suitable for infrequent and unprofessional work. The twister is made a little clumsily, and this immediately catches the eye, but on the other hand, it is needed for work, and not to admire it. And with his functions, he does an excellent job. I also liked the compact and convenient storage box. If you need a set not for professional use, then the product is good, I recommend it!