Bob "The Limestone Cowboy" Anderson won the BDO World Championship in 1988 and has a permanent place in the Darts Hall of Fame. The World Champion Steel variant in 20g is Bob Anderson's preferred model. The weight is guaranteed with a tolerance of +/- 0.1g. The darts are available in 20g, 22g, and 24g. They are made from high-quality 90% tungsten. The barrels feature an engraving with the Unicorn logo and the signature of the world champion. They come with Unicorn World Champion aluminum shafts and Unicorn World Champion flights in the new Unicorn ICON case.