Caliburn Player Darts – Soft Tip – 90% – Rainbow Coating – Ivan – 18g. This Caliburn barrel features a rainbow coating to complement the design of the barrel. This 90% Tungsten dart features a swirl grip at one side of the barrel and a ring grip at the other end making this suitable for both front and rear grippers of the dart. Complete with Caliburn Dart Shafts and Flights.