Bouldering climbing training holds. Sold as a set of two. Product Name: Metolius Rock Rings 3D ME14007 White/Black Swirl They have screw holes, so you can attach them to a wall or hang them with a rope. I get bored easily, so I only used them occasionally and they were mostly left unused. As shown in the fifth image, part of the outer part of the rope is torn and the inner part is exposed. The outer part is like a cover, so it shouldn't affect the durability when hanging (at least a person weighing around 80kg had no problems hanging from it), but I cannot guarantee it, so please use it at your own risk. Also, due to the material of the rope, some of the red rope material is attached to the holds, so please check the images and make your judgment.