Don't know but it seems like the set up for most of these things take longer than simply doing it by hand the old fashioned way. A skilled laborer could do much of this much faster without all these ingenious tools and machines. The hilti's man is a bit funny. the videos are incompletely explained or they haven't thought about it. Von Würth in Germany has the same systems in principle, but they are more logical and better explained. The problem in this video, it is too complex. This system is intended for small holes in the other hilti videos on the subject of fire protection. Most of the screeding tool are just a double handling tool, makes working time adding. I will stick with my workers skill