Ruthless Black Wolf Darts – Steel Tip Tungsten – Gold Ring – 21g. The Black Wolf series feature a 90% black titanium tungsten barrel, with a reverse cut grip at the front section and a microgrip ringed section at the rear. Complete with a set of Ruthless Shafts and Ruthless Flights.Ruthless Black Wolf Darts – Steel Tip Tungsten – Gold Ring – 23g. The Black Wolf series feature a 90% black titanium tungsten barrel, with a reverse cut grip at the front section and a microgrip ringed section at the rear. Complete with a set of Ruthless Shafts and Ruthless Flights.