Designed to be used as the primer/ booster to initate the main pyrogen (secondary, which is coated over it), the ELV primers ignite easily at lower temperatures and combust (rather than pop) at a pre-determined rate at very high temperature to reliably ignite other pyrogens and metal mixtures used as an overcoat (optional). Using zirconium and other exotic metals, we have designed two different types - conductive and non-conductive. The conductive type requires no bridge-wire so there is no soldering and ignites with as little as a 9 volt transistor battery. Simply strip 3/8" of insulation from leads, dip the tip 1/8" into the primer, dry and dip it again in a pyrogen of your own making or use our Original Blend™, Pyromag Magnum? Hydra Arc™, Metallic H3™, BoroMag 5000°F™, BoroZirconium 8000°F™, or Mag/Ti Tracer™ for results that will have other match-makers drooling at their sight! The non-conductive type is applied to the element wire (bridge-wire) only followed by an overcoat of another high energy pyrogen. It will ignite using as little as a AA (1.5 volt) battery. Using these primers, positive, inexpensive electric ignition is easily obtained! Each type comes with enough primer to make OVER 500 IGNITERS! Do you need smaller igniters for small black powder type motors? Use the Conductive ELV™ primer (listed below) on 26 gauge twin lead wire with the final coat of NC or CA lacquer! Works great alone! Non-hazmat shipping - No ATFE required to order.