DOETYD 10 Packs Blue Ink Pen Refills for Cross Ballpoint Pens 11.5cm Rollerball Refills for Cross 8513 Rollerball

SET CONTENT: You will get 10pcs blue medium refills for any CROSS biros that fits 8513 refills for your daily use. PREMIUM QUALITY MATERIALS: The refill itself is made of high quality stainless steel, smooth and durable, with high quality oil-based ink, bright colour and fast drying to prevent getting your hands dirty. PRODUCT DESIGN: The nib part of the Premium Black Medium Refill is designed with a tungsten carbide ball, which makes writing smoother, and the ink is stable and does not stop coming out. EASY TO USE: When your fountain pen runs out of ink, pick a new refill and replace it. The product itself is small in size and light in weight, easy to carry around to prevent accidents. WIDELY USED: black medium refill is suitable for office, school, home and other environments, to prevent the biros out of water embarrassing situation, at the same time this product due to its practicality is also a good choice as a gift to colleagues or friends.