The Uni-Ball Signo RT1 UMN-155N is a premium retractable gel pen designed for smooth and consistent writing. Featuring an innovative edgeless tip, it reduces friction against paper, providing an unparalleled writing experience. The pen’s pigment-based Uni Super Ink ensures waterproof, fade-resistant, and tamper-proof lines, making it ideal for professional documents and everyday use.

Specifications:

• Brand: Uni-Ball

• Model: Signo RT1 UMN-155N

• Tip Size: 0.7mm (writes a 0.4mm line)

• Ink Type: Pigment-based Uni Super Ink

• Tip Material: Stainless steel with edgeless tip design

• Barrel Material: Plastic (AS) with elastic rubber grip

• Grip Type: Ergonomic rubber grip

• Mechanism: Retractable

• Refillable: Yes (UMR-87 refill)

• Erasable: No

• Smudge Resistant: Yes

• Water-Resistant: Yes

• Fade-Resistant: Yes

• Pocket Clip: Yes

• Dimensions: Approximately 13.8 cm (length) x 1.03 cm (diameter)

• Weight: Approximately 11.5 grams per pen

• Country of Origin: Japan