Product: PILOT"CUSTOM 823 - Plunger Type/TransparentBlack" (nib : Medium)
Brand: PILOT
Color: Transparent
Special "CUSTOM" 
It can be said that "CUSTOM" is the glory name. Moderate thickness of axis, length, nib, and the sight that shaved extra decoration. The attitude to pursue supreme writing intently - this is the "CUSTOM". However this "CUSTOM 823" have very interesting sucking system. The system is "Plunger system". 
 
 Enjoyable filling mechanism 
This system use nature of "vacuum". You can enjoy mechanism through skeleton body. Turn the knob and pull stick... pull, pull. Let's push the knob. The ink is filling in a moment ! And when you write, gently loosen the knob (for flowing ink to nib). Ink is dancing in the skeleton axis. Interesting. Can't forget the scene if you look once. Certainly you can't wait out of ink. So, please write, write, write ! But don't forget. This is "CUSTOM". 
 
 Why Plunger system ?  
Please remember the general attitude of "CUSTOM". Usefulness for writing. "Plunger system" can pump up more ink (1.5ml). This is the most quantity among regular line. Around 1935 - using rotary system was not popular. The proposition was "prevent ink from leaking and store more quantity". Plunger system have both points. Now, cartridge and converter system become popular. But not be sepia color. 
 
 nib 
Nib is 14K (#15), large size. It's majestic and arched shape is elegant. But of course, essence is writing touch. The moderate hardness can endure long time writing. And moderate softness tell characteristic repulsion. Good balance. 
Ink - This system is peculiar, so strongly recommend to use INK-70 (PILOT products). This bottle have ink reservoir. 
Equipped accessories - Of course, special box only. Cartridge ? Converter ? What is it ?
Strange , but genealogy of "CUSTOM"
"Plunger system" - can pump up more ink (1.5ml)
Skeleton body - you can enjoy mechanism visually.
14K (#15) nib - Majestic. Moderate softness and toughness for writing.
Equipped accessories : elegant gift box (filling mechanism is bulit in).

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