Remember when everybody used those blue and black erasable where "erasing" mostly meant smudging the ink across your paper? Well, Sharpie may have revitalized the erasable writing utensil market with a new liquid pencil
. According to Geekosystem, the Sharpie Liquid Pencil uses liquid graphite, which is erasable for three days after you put it to paper
. After that 72-hour window, the marks become permanent. The graphite used in the liquid pencils is equivalent to that used in wooden yellow No. 2 pencils, so you can use them when taking standardized tests. Sharpie's "miracle pencil" hits stores in September, and pre-orders are ready over at Office Depot for $5 a pack.
There is a downswide, though. Owning such a pencil means you're even less likely to get it back after lending it to the kid next to you. [From: Geekosystem
and Sharpie Blog
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