G2 is the longest writing gel ink pen Independent ISO testing. Data on file with Pilot Corporation of America. Provides smooth, skip-free writing. Contoured rubber grip offers writing comfort and control. Great for everyone, especially people who write for a living. Retractable and refillable. Convenience Packs. Pen Sub-Brand & SKU Line: G2 Premium Pen Style: Retractable Pen Type: Gel Pen Refillable Yes/No: Yes.