Datadart Black Prism 90% Tungsten Steel Tip Darts. All Black Prism 90% Tungsten darts are individually packaged and include a set of durable stems and a set of Datadart flights.Datadart Black Prism 90% Tungsten Steel Tip Darts. All Black Prism 90% Tungsten darts are individually packaged and include a set of durable stems and a set of Datadart flights.Datadart Black Prism 90% Tungsten Steel Tip Darts. All Black Prism 90% Tungsten darts are individually packaged and include a set of durable stems and a set of Datadart flights.