Brand name: Cosmo Darts. What. Model by Yasuyoshi Matsumoto. Version: V3. Weight: 20g. Type of point: 2BA 4mm. The diameter is: 7.4mm. Length: 45 mm. .What. The product consists of 1 set of darts ((3 barrels) Yasuyoshi Matsumoto V3, 1 set of 3 rods, 1 set of 3 feathers Cosmo Darts.