BULL’S Metis Darts – Steel Tip – Black Brass – Blue Ringed – 23g. This Bulls Metis Brass Dart is made from the highest quality brass material and is a finished with a blue coating, remachined to display the ringed design along the straight barrel. Bulls Aluminium shafts along with Powerflite flights complete the dart perfectly.BULL’S Metis Darts – Steel Tip – Black Brass – Blue Ringed – 21g. This Bulls Metis Brass Dart is made from the highest quality brass material and is a finished with a blue coating, remachined to display the ringed design along the straight barrel. Bulls Aluminium shafts along with Powerflite flights complete the dart perfectly.