ON THE RUN OTR.005 HARD TO BUFF SQUEEZE MARKER 12 mm

The OTR.005 Hard To Buff squeeze marker comes with a 12mm round mohair tip and 90ml of Hard To Buff ink. This is deep black, highly pigmented alcohol-based ink known for extreme permanence – the name refers to how difficult it is to remove once it’s down. Glossy finish, high coverage, built to stay visible even after cleaning attempts.

Squeezable body lets you control ink flow with pressure. Squeeze lightly for thin controlled lines, press hard for thick saturated strokes and drips. The 12mm round tip puts down bold tags, signatures, and expressive lines. Works on walls, metal, glass, wood, concrete, plastic, stone, and canvas. The alcohol-based formula adheres permanently once dry.

Refillable body and replaceable tip keep it running long-term. Commonly used by writers for hands, tags, throw-ups, and anywhere you need permanent bold black that won’t quit. Also works for creative illustrations, signage, or large-format marker work where permanence matters.