PURPOSE: A sliding type writing tool having nibs in both ends is provided to supply ink to the nibs having different shapes to both sides and to supply a cartridge having a different color to each of the nibs, thereby reducing a burden of buying many kinds of writing tools according to different colors or nip shapes.;CONSTITUTION: A sliding type writing tool having nibs in both ends includes a pen lead, a shaft(20), a dryness preventing unit(40), and a cap. Front and rear nibs having different shapes are respectively attached to both ends of the sliding type writing tool. The pen lead consists of separable two pieces to be capable of exchanging a cartridge and accepts the cartridge inside for supplying ink to the nibs. The shaft accepts the pen lead inside, maintains a tensed state with the pen lead by a spring and an appearing and disappearing mechanism for a direct electric operation mode, and forms a nib hole for the front nib to appear and disappear. One side of the dryness preventing unit accepts the front nib of the pen lead for sealing the front nib, and a different side of the dryness preventing unit is adhered to an inner periphery of the nib hole of the shaft to open and close the nib hole. The cap is combined to a different end of the pen lead to accept the rear nib of the pen lead for sealing the rear nib. The pen lead accepts the front nib and consists of a front nib accepting part(10) and a rear nib accepting part(30,60). The front nib accepting part accepts the cartridge to supply ink to the front nib. The rear nib accepting part accepts the cartridge to supply ink to the rear nib.;COPYRIGHT KIPO 2013
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