*Caliburn Matrix I Darts - Steel Tip - 90% - A1 - BlackCaliburn Matrix I Darts Steel Tip 90% A1 Black 23g. This Caliburn Matrix I Steel Tip Dart features a 90% torpedo shaped tungsten barrel, with a quad cut grip along the dart. The black coating and remachine process enhances the visual appeal of the dart. They come complete with Caliburn Dart Shafts and Flights. Caliburn Matrix I Darts Steel Tip 90% A1 Black 25g. This Caliburn Matrix I Steel Tip Dart features a 90% torpedo shaped tungsten barrel, with a