Pen Refill Ballpoint,Ballpoint Ink Pen Refills for D1,0.5mm Ultra Fine Tip,Compatible with D1 Electromagnetic Pens,Silver,Pack of 10

["Compatibility: These tips are compatible with any electromagnetic pen using standard D1 refills, including for Tech3, for Tech 4 and many multifunction ballpoint pens.","Metal Construction: Crafted from premium metal, these ballpoint refills boast high hardness and wear proof performance, ensuring reliability and durability over time.","Smoother Writing Experience: Featuring an oil based design, these D1 ballpoint pen refills offer smoother ink, requiring minimal pressure for effortless writing.","Ultra Fine Tip Design: With a length of 66mm and an ultra fine 0.5mm tip, these refills provide greater accuracy, making writing tasks easier and more precise.","Comprehensive Package: The package includes 10 replaceable ballpoint pen refills and 1 small tweezer for quick installation. Please note that the pen is not included."]