Rust-resistant stainless steel bag nuts. It is often used to secure desks, chairs, and playground equipment, to cover and conceal the tip of the bolt, to prevent injuries and beautify the appearance. Our bag nuts are made in Japan with 2 types of standard shapes. Due to the size and usage of the product, it is easy to lose, so there are 1 to 2 pieces than the listed quantity as a spare one. (If the quantity listed is true to the listing.)