Caliburn Hunt Darts – Steel Tip – 90% Tungsten – H2 – 21g. Each pack contains 90% tungsten barrels fitted with Caliburn replaceable points, stems and flights. Thread: 2baCaliburn Hunt Darts – Steel Tip – 90% Tungsten – H2 – 19g. Each pack contains 90% tungsten barrels fitted with Caliburn replaceable points, stems and flights. Thread: 2ba Supplied fitted with the Caliburn Replaceable Point System.