These bookends have a strong metal structure for heavy support. Made of selected heavy-duty steel materials and advanced stamping technology, it is strong and heavy enough to keep all your books neat and upright. Super smooth and flat high-quality paint surface and rounded edges ensure that your bookshelf or books will not have any scratches or wear marks. Anti-slip pads are designed to prevent the book ends from sliding. They allow you to move the book ends without scratching your desk. Keep your room clean and tidy and keep your books in order. (The price of one book is two book ends)