Bottlesen’s Gorilla Grip knurl offers the strongest grip on Planet Earth! This extra coarse knurl gives the dart thrower maximum grip for a powerful and uniform release. The Gorilla Grip Hammer Head 90% tungsten dart line offers a variety of weights, satisfying every dart thrower’s need. Gorilla Grip Hammer Head darts are equipped with anodized aluminum 2ba shafts. Features: 90% Tungsten barrels 2ba shafts Standard Flights Anodized Aluminum Shafts Packaged in Deluxe Show Case w/ Extra Flights, Shafts and Dart Tool.