Caliburn Marshal Darts – Steel Tip – 90% – M2 – Black Titanium – 22g. This Caliburn Marshal Steel Tip Dart features a 90% straight tungsten barrel, with a knurl grip towards the bottom of the dart, with a razor grip section at the rear. The black coating along the barrel enhances the visual appeal of the dart. They come complete with Caliburn Dart Shafts and Flights.Caliburn Marshal Darts – Steel Tip – 90% – M2 – Black Titanium – 24g. This Caliburn Marshal Steel Tip Dart features a 90% straight tungsten barrel, with a knurl grip towards the bottom of the dart, with a razor grip section at the rear. The black coating along the barrel enhances the visual appeal of the dart. They come complete with Caliburn Dart Shafts and Flights.