This is a hook with a spring to prevent detachment. It's a screw-in type, making it easy to install on wood, etc. Using resin plugs, it can be fixed to materials like concrete and blocks. It prevents hanging items from swinging, moving, and falling. The material uses carbon steel with an anti-rust coating, making it durable, hard to break, and resistant to rust. [Set Contents] Screw hooks with buckles x 10, fixing plugs x 10 [Material] Carbon steel [Size] Please check the images for details. [Color] Black [Load Capacity (approx.)] 18kg [Design] Curve