Unicorn T90 Core XL – 90% Tungsten Darts. Features: 90% Tungsten Nickel Alloy, Super slim barrels for extra close grouping, Matched weight series – set of 3 barrels within 0.1g, Unicorn Shafts, Unicorn Flights.Unicorn T90 Core XL – 90% Tungsten Darts. Features: 90% Tungsten Nickel Alloy, Super slim barrels for extra close grouping, Matched weight series – set of 3 barrels within 0.1g, Unicorn Shafts, Unicorn Flights.Unicorn T90 Core XL – 90% Tungsten Darts. Features: 90% Tungsten Nickel Alloy, Super slim barrels for extra close grouping, Matched weight series – set of 3 barrels within 0.1g, Unicorn Shafts, Unicorn Flights. Unicorn T90 Darts – Steel Tip – Core XL – S1 – Green