Ruthless Night Hawk Darts – Steel Tip Tungsten – Black – 23g. The Nighthawk series feature a 90% black titanium tungsten barrel, with a ringed section at the front and a smaller ringed section at the rear. Complete with a set of Ruthless Shafts and Ruthless Flights.Ruthless Night Hawk Darts – Steel Tip Tungsten – Black – 25g. The Nighthawk series feature a 90% black titanium tungsten barrel, with a ringed section at the front and a smaller ringed section at the rear. Complete with a set of Ruthless Shafts and Ruthless Flights.