This is a clip-on pen holder (016) that can be attached to a Traveler's Notebook.
The M size can hold writing instruments up to 12mm in diameter through the leather holder. It is compatible with both regular and passport-sized Traveler's Notebooks.
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Material: Clip/metal, pen holder/genuine leather
Size: Package/H53×W120×D10mm, main body/H24xW65xD10mm