Caliburn Hunt Darts – Steel Tip – 90% Tungsten – H4 – 20g. Each pack contains 90% tungsten barrels fitted with Caliburn replaceable points, stems and flights. Thread: 2baCaliburn Hunt Darts – Steel Tip – 90% Tungsten – H4 – 22g. Each pack contains 90% tungsten barrels fitted with Caliburn replaceable points, stems and flights. Thread: 2ba Supplied fitted with the Caliburn Replaceable Point System.