Gel Roller. Gel pen with a push mechanism. Features a rubberized grip zone for a comfortable writing position. Line width: 0.32 mm. Writing tip made of stainless steel with a tungsten carbide ball. Made from recycled materials. Refillable. The G2-7 is the best-selling gel pen in the world and an absolute classic among gel pens. It has a push mechanism for extending and retracting the refill. Thanks to its rubberized grip zone, the G2-7 feels particularly good in the hand, leading to a comfortable writing posture. Made from 50% recycled materials (excluding consumables). Case made from 100% recycled material.