The MvG Assault 90% from WINMAU is a dart set with barrels of 90% Tungsten and is a personalized dart set from the Dutch Prof Michael van Gerwen. The MvG Assault 90% are straight black darts with light green accents and have horizontal thick grooves which provide a strong grip. This personalized dart set comes in 3 weights; 22-24-26 grams. 22G = Barrel Length: 50.80mm, Barrel Width 6.35mm. 24G = Barrel Length: 50.80mm, Barrel Width 6.60mm. 26G = Barrel Length: 50.80mm, Barrel Width 7.15mm.