Diplomat Viper Rollerball BlueStrike First Ask questions later with this new Viper rollerball from Diplomat. A finely chiseled body and magnetic cap closure bring the skin if this asp to life. The streamlined shape, whether capped or not, has a German engineering feel. Under the grip youll find you can use any international sized rollerball or fiber tip refill. Customize the way your Viper writes with a refill that provides a bold statement for signatures or a fine line for tight