Viper Sinister Darts – Soft Tip – 95% – Sandblasted – S5 – Twin-Knurl – 18g. These new Viper Sinister darts feature a unique sandblasted section at the front and rear of the barrel. Each series has its own unique grip along the centre of the barrel to creat a perfect dart suitable across everyones ideal grip. Includes Viper shafts and flights.Viper Sinister Darts – Soft Tip – 95% – Sandblasted – S5 – Twin-Knurl – 20g. These new Viper Sinister darts feature a unique sandblasted section at the front and rear of the barrel. Each series has its own unique grip along the centre of the barrel to creat a perfect dart suitable across everyones ideal grip. Includes Viper shafts and flights.