Improve Reading Habits: This book stand is made of high quality white ABS plastic and high quality aluminum alloy, it is lightweight and easy to carry, suitable for children and adults. Small changes to your pre-reading habits will help reduce shoulder, neck and back pain while protecting your vision for a whole new reading experience. Ergonomic Design: The book stands for reading can swing 180 degrees back and forth, and the height adjustment range is 0 -7.87". You can adjust the angle according to your height and the height of the table to achieve a comfortable reading posture. The transparent side clips of the recipe book stand can see clear page content and turn pages with one hand. Universal Application and Multipurpose: This Book Holder for Reading Stand is 8 inches high, with a sturdy front shelf of 6.5 x 11 inches, expandable to 16.5 inches, and can hold various books from B6 to A4. This reading stand is suitable for 5"-8.5" bookshelf, 6-13" iPad holder and tablet holder, and can also be used as a cookbook stand, recipe book stand, book display rack and more. Easy to InstallYou can use it right away. The installation process is very simple. You just use the Allen key located under the white table top to screw the white table top to the support arm. Note : There are two adjustment nuts on the support arm, use the wrench placed at the bottom of the book holder to adjust the tension of the arm. For heavier hardcovers and laptops, pull tight for safe use. This children's bookshelf is not suitable for books with pages that are too small. If you have any questions, please feel free to contact us. Our staff will get back to you as soon as possible within 48 hours.