MengRan 4.5'' Ballpoint Ink Pen Refills for Twist Pens,1mm Medium Tip, Compatible with Cross Pen Refills (8513)(10 Pcs Black Ink)

SMOOTH WRITING: Featuring a medium point and three point supporting pen tip technology, these refills glide smoothlywithout skipping., LONG-LASTING INK: Constructed with a large ink capacity, each refill provides dependable writing performance for thousands of characters before needing replacement., 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., 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.