Fat Cat Bulletz 90% Tungsten Steel Tip Darts with Storage/Travel Case, 23 Grams steel Designed with high quality, 90% tungsten and 10% nickel barrels which offer exceptional balance and styling in a slim profile Each barrel has strategically placed knurled bands, deep grooves and rings that make excellent gripping points and encourages consistent hand placement Lightweight, convex nylon shafts provide a tight fitting to the barrel that improves stability and greatly reduces the need to retighten during play Includes an additional set of nylon shafts, flights and a dart mechanic wrench; Each steel tip dart weighs 23 grams Darts and accessories are fashionably stored and protected in the slim-profile, hard-shell case