The OTR 004 Soultip EMPTY squeeze marker by On The Run. This versatile 75 ml squeezer is relatively small and easily concealable. It comes with a durable 12mm mohair "Diamond-Fibre" nib which won't tear when writing on rougher surfaces (like nylon tip daubers). The marker has a refillable empty body, suitable for all ink and paint refills. For the perfect combination use ON THE RUN Soultip paint and Flowpen ink refills.