Unicorn Darts PDC Premier James Wade Phase 2 90% Tungsten Pro Soft Tip Set James "The Machine" Wade. Phase 2 set. Why tungsten for darts? The UniBoffin explains: Tungsten is Swedish for "heavy stone" and was well-named, being one of the densest substances known. The pure metal weighs around 19gms/cc, and although this reduces slightly when it is combined with small amounts of, eg, nickel to produce a more workable material, the resultant alloy. will still be 50% denser than lead and maybe twice as dense as brass or steel. Although tungsten is perhaps not the ultimate material for dart barrels (gold, which is of similar density, is too soft, but a case could be made for platinum / iridium at over 21gms/cc), it is certainly close and it has a distinct affordability advantage over the competition Product Features Natural Tungsten Guaranteed Weight Within 0.1g Icon case Engraved Unicorn Hallmark Material 90% Tungsten Weights Available 20 Grams (04165) Size Length: 45.72mm Diameter: 6.15mm (20 Grams) Pack contains darts, flights, shafts and case. Model 04165