BULL’S Sirius Darts – Steel Tip – Stainless Steel – Rear Ringed – 24g. This Bulls Sirius Dart is made from a stainless steel barrel and features a smooth section at the front with a ringed rear section. A B-Grip-2 shaft as well as Bulls flights complete the dart perfectly.BULL’S Sirius Darts – Steel Tip – Stainless Steel – Rear Ringed – 22g. This Bulls Sirius Dart is made from a stainless steel barrel and features a smooth section at the front with a ringed rear section. A B-Grip-2 shaft as well as Bulls flights complete the dart perfectly.