Refill for Bible-sized system notebooks. It uses paper that is difficult to slip out and has high writing quality, making it stress-free to write. The light gray that does not interfere with the color of the pen suppresses the whiteness of the paper itself, so it is also characterized by the fact that the eyes do not get tired. A 9mm wide dot grid type that serves as a guide for letters and figures while being discreet. 30 sheets