This is a 2.72kg shot put for junior high school girls. It is not unused. I think it's fine for practice. The manufacturer is unknown. I think it might be a blue shot put from Danno with the blue rust prevention coating removed, but the 2.72 marking makes me wonder if it's different. I polished it to remove rust and make it clean. How it looks is subjective, so please look at the images carefully before purchasing. I have no intention of selling anything defective, but to avoid any problems, I ask for no claims and no returns.