Unicorn autograph darts S3 21g 80%. .What. Brand name: Unicorn Darts.. It's called the Autograph S3. Weight: 21g. The tip is metal . The material is 80% tungsten. Barrel width: 7.6mm. Long barrel: 43.2mm. . What. The product consists of 1 set of 3 Autograph 3 dart bodies Unicorn Darts, 1 set of 3 feathers and 1 set of 3 reeds.