Evolution Gerb 22mm 20G20 Aerial Shells (self contained)AirburstCombinationCometsCrossetteFalling CometsFallsFlares and Strobe FlaresFlash TraysGerbsJetsLaser CometsLine RocketsMinesMortar HitsSparkle Cannons/Cannon SimulatorSPD Bullet HitsTheatrical Flashes Aprox. 20 second 20ft/6 m 22 mm Golden Gerb CE 0589-T1-0194 (IN) Safety Distance, 4 m radial, 9 m directional.