Harrows Damon Heta Darts – Steel Tip – 90% Tungsten – Series 4 – 21g. Engineered for and in collaboration with Australia’s Number one. The latest addition to Damon ‘The Heat’ Heta’s signature Harrows range, the Series 4 darts have been crafted in close collaboration with Australia’s No. 1, delivering the enhanced feel and control Damon demanded to elevate his game.