Evolution Hotburst SP 20′ Aerial Shells (self contained)AirburstCombinationCometsCrossetteFalling CometsFallsFlares and Strobe FlaresFlash TraysGerbsJetsLaser CometsLine RocketsMinesMortar HitsSparkle Cannons/Cannon SimulatorSPD Bullet HitsTheatrical Flashes Aprox. 20ft/6m diameter fairly loud Silver Airburst, CE 0589-T1-0165 (OUT), Safety Distance, 7 m .