Smoother than gel! Classical retractable ballpoint pen with non-slip soft grip zone and a solid metal clip. The new refill SLIDER 757 (X20 format) with revolutionary ViscoGlide®-Technology provides a pleasant, silky smooth writing experience. The wear resistant stainless steel tip guarantees clean and complete use of ink. Ink colour black is waterproof according to ISO 12757-2 H. The colour of the grip zone = ink colour