Package Information: Package includes 2pcs wooden blocks, 2pcs screw stick, 2pcs wing nuts, 4pcs spacers that you can assemble into a binding machine. Size Information: The wood block is about 25cm/9.8inch long, 3.8cm/1.5inch wide, 2mm thick and the screw is about 13cm/5.1inch long, you can use it with the right size of books for home DIY book binding. High Quality Material: Made of high-quality beech wood and screw fittings made of high-quality metal, the binder is compact and practical, and won't take up much space when not in use. Easy to Use: Bookbinding press hardware allows for multiple sizes of books to be used, you can adjust the size as needed to give you the DIY fun of bookbinding in a traditional and practical way. Usage: Bookbinding press are great for doing DIY book book making, use the binding machine to press the book side seams and apply glue to complete the book binding.