US Darts - XXL 40 grams, Super-Heavy Fixed Point Fixed Point Steel Darts Manufactured exclusively for US Darts from 80% Tungsten Alloy Super Heavy Professional Quality Darts Ringed barrels to prevent the dart from slipping as it is released from the fingers Neutrally balanced to prevent unusual flight patterns once the dart is released. The darts are packaged in hard dart case with hard-wearing aluminum shafts, double thickness XXL flights