Extra Large Capacity: This 3-tier book cart with 14.14-inch high shelves holds a ton of books or office supplies! It’s also equipped with side compartments for A4 folders/tablets—ideal for libraries, home use, and more Stable Load-bearing: Made of high-strength carbon steel, each layer of the rolling book cart supports 110 lbs (50 kg), with a total capacity of 330 lbs (150 kg). The rust-resistant coating ensures durability, ideal for heavy books or equipment Silent Movement: TPR silent swivel casters glide smoothly, and two have a locking feature for secure positioning. Move the book truck effortlessly across wood or tile floors without disturbing anyone—great for libraries or nighttime use Quick Installation: No need for complex tools! The library book cart is easy to assemble with pre-drilled holes, so you’ll have it ready in no time. Includes an installation guide and extra screws for your convenience Versatile Use: Ideal for library restocking, transporting school supplies, distributing office documents, or organizing books and items at home. This rolling book shelf is your go-to solution for work and home needs