Med. 0.7 mm. Specially formulated ink helps prevent check fraud! Endorsed by: Frank W. Abagnale, Secure Document Expert. What is check washing? Check washing is a form of check fraud. Check washing is a process where a thief erases the ink from a stolen check using common household products. Many Uni-ball pens, such as the Uni-ball 207, use specially formulated inks that contain color pigments that are absorbed into the check's paper fibers, trapping them from check washing efforts. Made in Japan.

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uni-ball 207 Gel Pens Pink Ribbon, Black Ink

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