High quality ink provides a professional look. Keep this refill on hand and you'll always have smooth, clean writing at your fingertips. Refill Format: Standard Gel; Refill For Series: Pilot® B2P Gel Pens, BeGreen Gel Pens, G2 Gel Pens, G2 Limited Gel Pens, G2 Pro Gel Pens, G6 Gel Pens, Dr Grip LTD Gel Pens, Dr. Grip Gel Pens, G-Knock Gel Pens; Refill Ink Color: Black; Color Family: Black.