Refillable Neutral Pen Replacement Cores - Needle & Bullet Tips in Red, Blue, Black

Upgrade your writing experience with these refillable pen replacement cores, designed for precision and versatility. Available in needle and bullet tips, they offer smooth and consistent ink flow in three essential colors: red, blue, and black. Whether you're taking notes, sketching, or highlighting key points, these refills ensure your pen is always ready for action. Enjoy effortless writing with high-quality ink that resists smudging and fading, perfect for both professional and personal use. Material: plastic Packing: 100 pieces/bundle, 10 pieces/bag, 20 pieces/bag Model: Bullet type + Syringe type + ST type Line Width: 0.5mm Suitable: Gel pen Type: Refills Manufacture country: China Instructions included: No