Zap Blast Knuckles Stun Gun, also called Brass Knuckle Tasers or Tazers. Using its unique design, the Blast Knuckles comfortably sits in your palm ready to use. With 950,000 volts, the attacker won't know what hit them. The grip gives the user full control with a soft rubber grip. Includes two CR123A batteries and a belt holster.