Pilot Corporation 77290 Gel Refills, Bold, 2/PK, Blue Sold as 2/PK. G2 bold refills are designed for use with Pilot G2, G2 Pro/LTD., G6, Dr. Grip Gel/LTD., Q7, BeGreen Precise Gel, GKnock and B2P. Dynamic gel ink formula delivers smooth, smear-proof writing.