Unicorn Darts World Champion Gary Anderson Phase 3 90% Tungsten Soft Tip Set GARY ANDERSON. WORLD CHAMPION 2015, 2016. Phase 3 Darts. 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 LP Finish Material 90% Tungsten Weights Available 18 Grams (04188) Size Length: 52.83mm  Diameter: 6.35mm (18 Grams) Pack contains darts, flights, shafts and wallet. Model 04188