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Uni-ball Signo Bit UM-201 Gel Ink Pen Refill - 0.18 mm - Red

by Uni
$2.00

Uni-ball Signo Bit UM-201 Gel Ink Pen Refill - 0.18 mm - Red - UNI UMR-121-18.15
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The world's thinnest pen now has refills available! Stock up on refills so you can continue taking microscopic notes. Great for the environment, great for your pocket too!

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Specs
Model NumberUNI UMR-121-18.15
Shipping Weight0.15 oz

Reviews
  YES! XD This refill fits..., February 11, 2012
By mis... - See all my reviews
YES! XD This refill fits in the 0.28mm red pen body. I bought the 0.28mm red pen and this 0.18mm red refill because the 0.18mm red pen was out of stock (is it out of stock forever? I dunno, but it's a fantastically smooth tiny-writing pen, maybe even better than the black 0.18mm, so buy them while you still can!)