It’s the section ruled notebook refill of passport size.
5mm section Kay, the character also can be written beautiful figure. But, it does not bother even Omoikkiri squeeze-out the frame will be or could have nice section ruffled.
Since you are using the ease of writing to the original writing paper stuck (MD paper), making it difficult to omission bleeding and back in a fountain pen.
This is a grid notebook ruled into 5mm squares. This makes it easy to write and draw figures on it. But it’s worth mentioning that it does not look that bad when you write and draw beyond the grid. Our original paper (MD paper) is used for this refill. MD Paper pursues the best feeling of writing, and makes ink hard to stain and sink through the other side of the paper. It goes well with fountain pens as well.
Medium paper / section ruled 5 × 5mm, 64 pages, MD Paper (Stecher binding)
Grid 5 x 5mm, 64 pages, MD Paper (Saddle Stitched)
H124 x W89 x D4mm
MADE IN JAPAN