black gel pen assembly wholesale bullet gel pen water-based black advanced ballpoint pen red blue gel pen

smooth writing [black]] smooth writing [red]] smooth writing [blue]]

20 pens +100 cores 30 pens +100 cores european standard 10+30 cores 10 pens +30 cores european standard 5+50 cores 20 pens +50 refills 20 black 5 blue 5 red 50 pens +50 refills 50 pens +100 cores 50 pieces 100 pieces mix and match remarks 80 pens +10 pens +10 pens european standard 5 refill mix and match notes 90 pens +10 pens 6 pens +10 cores