– Permanent pencil
– Convenient not to sharpen pencils by hand
– One eternal pencil is equal to 100 pencils
– Pen tip material： Alloy
– Weight：About 10g
– Durable equivalent to 100 pencils (500000 words)
– The principle of the pen is to make the metal and paper contact, instantly oxidation, but as the core of the pen is harder than the pencil, writing effect is similar to HB handwriting.
– Packing： penholder + penholder + eraser
– Package: OPP
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