The first time I took a tool of this brand and so unlucky. The beating of the cartridge was very upsetting. Inside the cartridge, the metal is somehow torn. A little noisy, but this is apparently the design of the gearbox. I contacted the manufacturer on the official website, but they do not answer. It seems that this substandard was leaked, For this I put a low mark. Many in euphoria do not pay attention to the cartridge. With Ali, Shurik for 1800 does not play as much as this one. Perhaps, of course, isolated cases, but it seems like the brand itself, the price category, is enough to monitor the quality of its products. The suitcase is of course huge, but this is apparently for the convenience of transporting a large the number of such types of cases, they are attached to each other with a special mount. And of course a very powerful tool, brushless motor, high quality material, very comfortable in the hand. It is also interesting that the AllTools site does not allow you to leave bad comments (below 3 stars), but good ones please. In collusion with the manufacturer or something.