The Ton Machine 80% by WINMAU is a dart set with barrels of 80% Tungsten and is the ultimate dart set with a correct price-quality ratio. Darts by Winmau. Original, streamlined darts with a classic ring grip that has remained popular and has been used by professional players for years. Weight: Barrel length: Barrel thickness: 22 grams 51.00 mm 6.60 mm 24 grams 51.00 mm 7.00 mm 26 grams 51.00 mm 7.30 mm