Kask K50, Road Helmet, 2014 The Kask K50 is an all-Italian road helmet made with their signature styling & attention to detail. The K50 NTA also uses the great fitting Up & Down system; the excellent ventilation characteristics & neat appearance offer for comfort & performance on every ride. The Kask Up-N-Down adjustment system makes for the accurate & comfortable fitting of their helmets due to the unique double pivot design which enables the back of the head to be cradled by the straps. These are easily tightened to the correct tension by a central ratchet wheel.