Brand name: Unicorn Darts. What. Models include Ross Smith 90% Natural. Size: Length: 48.3 mm Bottom: 6.2 mm. The material: 90%. .What. This model and weight on the one used by darts player Ross Smith. .What. The product consists of 1 set of 3 body darts, 1 set of 3 feathers and 1 set of 3 reeds.