MengRan 4.5'' Ballpoint Ink Pen Refills for Twist Pens,1mm Medium Tip, (10 Pcs Blue Ink)

SMOOTH WRITING: Featuring a medium point and three point supporting pen tip technology, these refills glide smoothlywithout skipping. QUICK DRYING INK: The fast-drying ink ensures your writing won't smudge, so you can immediately start a new task without waiting for pages to dry. OIL-BASED INK : Crafted with premium oil-based ink, this pen refill delivers smooth, skip-free writing while ensuring exceptional water resistance. DURABLE TIP: Crafted with a stainless steel nib and tungsten carbide ball, the writing tip is built to withstand heavy usage without wearing down prematurely. UNIVERSAL REFILLS: Sized to fit pens from many popular brands, these refills provide a cost-effective way to keep your favorite writing instruments in continuous service.