These devices are durational gerbs that project a continuous plume of bright silver titanium sparks, pure gold ferrotitanium sparks or a colored flame at the nozzle topped off by a plume of bright silver sparks. All heights listed are actual performance, not clearance heights. * The gold gerbs produce a cascading effect and are designed to have some spark fall back. * Gerb 1 does not come standard with an igniter. A 12" electric match may be installed for an additional $1.