The Guard Dog 1/2 Ounce Hard Case Pepper Spray makes security and protection convenient, safe, effective and appealing. The powerful 18 percent OC (red pepper) ingredient is concentrated to quickly immobilize an assailant and prevent a violent attack from up to 12 feet away. The hard case keychain design allows for direct use from the housing with a quick, twist-top actuator and safety slide to prevent accidental discharge. Laboratory tested, anti-leak formula for optimum assurance.