Winmau Jeff Smith darts 90% 25 grams and you're out of time. .What. This is Winmau. Modeled by Jeff Smith. The material is 90% tungsten. Barrel weight: 25 grams. Total weight: 26.5 grams approx. Barrel length: 50.8mm. Barrel width: 6.6mm . What. Type of tip: metal. Rope thread: 2 to 4 mm. .What. The Winmau Jeff Smith 25gr darts set consists of 1 set of 3 bodies with metal tip, 1 set of 3 black short Vecta rods and 1 set of 3 black and purple Prism Alpha feathers.