I work as an electrician, I mostly twisted self-tapping screws and screws, one might say rarely. The time of use is 3 months, the symptoms of a malfunction appeared immediately, I did not betray them. The screwdriver works on the first speed. A new gearbox for Ali 2300, of course not the original, but I think it will be no worse. Pros: It is convenient to use, the power for this type of tool is good. The battery lasts for a day, with moderate use, it charges in half an hour. Has cons: Basically, the gears are metal, but there are a few plastic ones, the teeth on one of them are worn out . In the gear shifting mechanism, when switching to the second speed, the plastic gear comes into the metal gear by about 2 mm. I went to 1 mm, here is the result . I switched the speed as expected, all the way.
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