The Silverstar Michael Smith 80% from UNICORN is a dart set with barrels of 80% Tungsten and is the ultimate dart set from the English dart player Michael Smith. This personalized dart set from Michael Smith comes in 3 weights; 22-24-26 grams. 22G = Barrel Length: 46.99mm, Barrel Width 7.14mm. 24G = Barrel Length: 51.05mm, Barrel Width 7.14mm. 26G = Barrel Length: 45.21mm, Barrel Width 7.92mm.