The MVG Adrenalin 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 Adrenalin 90% are straight black darts with light green accents and horizontal thick grooves that provide a strong grip. This personalized dart set comes in 4 weights; 22-23-24-25 grams. 22G = Barrel Length: 54.60mm, Barrel Width 6.00mm. 23G = Barrel Length: 54.60mm, Barrel Width 6.10mm. 24G = Barrel Length: 54.60mm, Barrel Width 6.20mm. 25G = Barrel Length: 54.60mm, Barrel Width 6.45mm.