Want to give your Smart Notebook a new lease on life? The disc and elastic band kit is the perfect way to personalize your notebook and give it a new style whenever you want. Create unique combinations and add your own touch to your Smart Notebook. Each kit includes 12 discs, 2 elastic bands and 1 C identifier, allowing you to update the look of your notebook in a practical and simple way. Disc G (31mm): up to 150 sheets of 90g paper or 120 sheets of 120g paper. As this is a handcrafted product, the shade may vary slightly, making each kit even more unique.