BULL'S Krzysztof Kciuk Darts - Steel Tip - 95% Tungsten - 20g. The Krzysztof Kciuk Challenger Steel Dart was developed in close collaboration with the Polish professional and represents precision and craftsmanship at the highest level. Made from 95 % tungsten, the straight barrel features a variety of finely tuned ring grip sections for consistent control and a confident throw. Subtle blue accents give the dart a modern, refined appearance that blends performance with elegance. Finished with a black medium B-Grip 2 shaft and a 150 micron Kciuk Metrixx Flight, this 20 g dart is designed for players who demand balance, accuracy, andreliability.