The Dr. Grip 4 1 uses Acroball Ink for a super smooth writing experience! Each pen includes a super fine .3mm black, blue, red, and green ink, plus a .3mm mechanical pencil (hence 4 1!)

• Gorgeous matte body colors! Choose from beige, pink, mint, blue gray, and lavender
• Refill ink with the Acroball Multi Refill BVRF in black, blue, green, and red
• Refill eraser with the Pilot Eraser Refill HERFNS-10
• Refill pencil lead with Pilot Neox Graphite
• For a version with .5mm lead and .5mm ink, try Dr. Grip 4 1
• For a version with .5mm lead and .7mm ink, try Dr. Grip 4 1