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NEW OLD STOCK BLACK SHELLS / HOODS FOR PARKER 51s. Fine thread for standard size 51s. These are 48 threads per inch. These come in 3 sizes of inner recess for the O-ring to fit in. Dale's not sure why they come in different sizes. It doesn't matter, as you don't really need the front O-ring. The pen won't leak without the o-ring, so the o-ring is unnecessary. **Note: These will not fit Demi size pens.
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🇺🇸 Ship from USA · On Agora since 2026
$35.00