I have been using it quite extensively for 3 years. During this time, never failed. I took it apart once to check the gearbox. Lubrication is sufficient. In the planetary gearbox, there are 3 plastic gears, the rest are metal, but it turns so hard that sometimes it breaks the screws. Pros: Very handy screwdriver. Excellent build. Reliable. Powerful. Self-tapping screws 100 drive into pine easily. Holds the battery for a long time (for 120 pieces of 52 mm screws, there are definitely enough). The ratchet works great. The backlight helps. Has some cons: There are none at this price. I would like a storage case, a second battery and fast charging. It takes several hours to charge (6-7 approximately). 1 speed 550 rpm. The brushes are not removable. No bit holder.
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