Good day! In this review, I want to share information about the ownership and use of a set of drills for concrete Stayer Drills "MASTER". This set consists of five drills whose diameter is: 4.5, 6.8, 10 millimeters. The drills themselves are in a special box (container), which is very convenient when moving a set of drills, as well as during its storage. I bought this set in 2018 when I was doing repairs in the apartment. Upon use, I want to say that these drills are made of good metal (the conclusion was made by me since the drills do not bend and do not deform when used for their intended purpose), and the soldering itself does not fly out, provided that it accidentally bumped into the reinforcement located in the wall of the house . I drilled quite a few holes with these drills (I drilled holes for the euro plinth), so I can safely say that the set is of good quality. I hope that my review will be useful to someone and help with the choice of drills. To everyone who read my review to the end - THANK YOU !!!