This shur can be called professional with a big stretch. First, it does not pull on power. If they only tighten the small screws and drill very occasionally, then it will still go. Long self-tapping screws cannot be screwed into them. Secondly, the backlight "illuminates" the lower part of the cartridge, but not the working area. And one more minus - there is no loop on the arm. There is a holster and a case, but there is no loop. For me, this is an inconvenience. Not worth the money, that's for sure.