Belay device. This is mountaineering equipment I found while cleaning out my parents' house. I don't have any knowledge about this, so please purchase it if you can judge from the images. There are scratches and paint peeling from use. I think there are no particular problems with its use. As shown in the last image, I have other items for sale, so I can offer a discount if you purchase multiple items. Please comment before purchasing. I will ship via Yu-Packet Post Mini.