Caliburn Ringerike Darts – Soft Tip – 90% – Black & Blue – 20g. This Caliburn Ringerike Soft Tip Dart features a 90% torpedo shaped tungsten barrel, with a ringed section along the front and a milled ringed with colour coating along the rear of the dart. The blue coating enhances the visual appeal of the dart. They come complete with Caliburn Dart Shafts and Flights.Caliburn Ringerike Darts – Soft Tip – 90% – Black & Blue – 22g. This Caliburn Ringerike Soft Tip Dart features a 90% torpedo shaped tungsten barrel, with a ringed section along the front and a milled ringed with colour coating along the rear of the dart. The blue coating enhances the visual appeal of the dart. They come complete with Caliburn Dart Shafts and Flights.