Model equipped with JETSTREAM Lite touch ink (Jet Stream Lite Touch Ink) 【Feature 1】Equipped with a new ink that reduces writing resistance even more than previous models, achieving a more "light" writing experience 【Feature 2】The knock bar is equipped with a mechanism to suppress fine vibrations and unusual sounds during writing The clip is resistant to bending and has a shape that fits well in notebooks and pockets [Quantity] 10 pcs. [Ink color] Black [Ball diameter] 0.5 [Refill] SXRL-05 【Size】Shaft diameter Φ11.3 × Thickness 14.3 × Total length 140 mm 【Weight】9.6 g