Caliburn Eureka Darts – Soft Tip – 95% – M4 – – Natural – 20g. This Caliburn Eureka Soft Tip Dart features a 95% uniquely shaped tungsten barrel, with a full smooth design with a slight scallop along one end. This natural look creates the perfect slick grip that works for many players. They come complete with Caliburn Dart Shafts and Flights.