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Cutter that can be cut more easily in a straight line.
Although you don't have a ruler, it is the role of aid about drawing a straight line using a directivity of wheel.
Using a directivity of wheel, it helps drawing a straight line.
Bongdam-eup, Hwaseong-si, South Korea
Danwon-gu Ansan-si Kyounggi-do, South Korea
hak gyun kim