The MVG Authentic 85% from WINMAU is a dart set with barrels of 80% Tungsten and is a personalized dart set by the Dutch Prof Michael van Gerwen. The MVG Authentic 85% are straight black darts with light gray accents and have horizontal thick grooves which provide a strong grip. This personalized dart set comes in 3 weights; 23-24-26 grams. 23G = Barrel Length: 50.80mm, Barrel Width 6.50mm. 24G = Barrel Length: 50.80mm, Barrel Width 6.60mm. 26G = Barrel Length: 50.80mm, Barrel Width 6.80mm.