gp380 gel pen 0.5mm business signature pen ballpoint pen conference carbon black gel ink pen learning office stationery

black red blue black refill red refill blue refill black [3 pens +20 refill]] red [3 pens +20 refill]] blue [3 pens +20 refill]] black boxed/12 pcs

0.5mm bullet 0.5mm syringe head