Original OEM Pilot G2 gel ink rollerball pen refill, designed for use with Pilot G2, G2 Limited, G2 Pro, G6, and B2P pens. This refill also works with Dr. Grip Ltd, Dr. Grip Gel, Execugel, Q7, and is compatible with G-Knock BeGreen and Precise Gel BeGreen models. The gel ink formula delivers a smear-proof, smooth writing experience, ensuring reliable performance for your writing needs.