I'm decluttering my parents' house. I don't know the official manufacturer, but it seems to be a commercial-grade item that my father kept for his intended use. It appears to be compatible with 35mm external rods, so it can be attached to other vacuum cleaners for convenient use. According to online searches, the size seems to be compatible with Hitachi, Panasonic, and others. The underside is made of resin, so it won't scratch floors. The following is a quote from the internet: Compatible with Panasonic, compatible with Lucky, compatible with Lucky, compatible with Haier, compatible with Lucky, and compatible with Panasonic. This tool has a retractable brush on the bottom, and you can use this tool on hard floors and carpets. Fits 35mm external rods. Thank you for looking. Although it is a new, unused item, there may be minor scratches from storage. Please refrain from purchasing if you are concerned about this. Please check the condition in the images provided and consider purchasing after understanding the above information. Suikuchi (Vacuum head) Suikomi (Suction) Suikomi (Suction) Vacuum cleaner Commercial use Carpet tool Switching Hitachi HITACHI Panasonic Panasonic