Mitsubishi Pencil Uni-Ball One Gel Pen Refill 0.38mm Black 10-Pack | Darker Ink for Memorable Notes

• Series: Uni-ball one
• Features: Black is darker and the colors are more vibrant, making it easy to remember and write crisp letters
• Compatible products: UMN-S-38 (uni-ball one 0.01 inch (0.38 mm)
• Lead diameter: 0.01 inches (0.38 mm); Ink color: Black
• Size: Shaft Diameter 0.2 x Thickness 0.2 x Total Length 4.4 inches (6.0 x 6.0 x 112.0 mm); Weight: 1.4 oz (42 g)

• Unscrew the barrel of your compatible Uni-Ball One pen (model UMN-S-38). Carefully pull out the old, depleted refill from the pen's tip mechanism. — Remove Old Refill
• Take one new black 0.38mm Uni-Ball One refill from the 10-pack. Align it with the pen's tip mechanism and gently push until it clicks securely into place. — Insert New Refill
• Screw the pen barrel back onto the pen body until it is firmly attached. Your pen is now ready to write with fresh, dark, and smooth ink. — Reassemble Pen

Typical situations where Mitsubishi Pencil Uni-Ball One Gel Pen Refill 0.38mm Black 10-Pack | Darker Ink for Memorable Notes helps — illustrative scenarios, not customer reviews.