Paper Mate Paper Mate 550RT Retractable Ballpoint Pen, Fine, Black (1887955) Inkjoy's unique blend of ultra-low viscosity inks and optimized writing tips gives you crisp, clean lines and unparalleled smoothness. Translucent and opaque materials flow together for a stylish look. The metal clip and accents provide durability. Tip retracts for convenient, one-hand use. 0.7 mm point is a great balance between fine and bold lines. Accepts refills. This is a box of 12 pens.