The service life of a screwdriver is 5 years, as the manufacturer calculated, in my case, after more than six months, a large backlash of the cartridge appeared, I will contact the service center. Problems with after-sales service in Hong Kong and Hong Kong, the indicated service centers informed me that they were not working, on the official worx website they said send the shopping mall for warranty repair at your own expense. It is taught if there is no ASC, then there is simply no guarantee whatsoever.