Simply insert the bridge wire into your shock tube and connect the two leads to your blasting machine and you are ready in initiate your shock tube. 80 per pack.
When 250 to 300 volts are applied, the E.B.W. creates a large spark that will ignite shock tube. Maximum test current is .04 amps, so you cannot use units that gradually increase voltage. If you are looking for a version that will fire with under 24 volts, see our Low Voltage STI's.
This must ship to law enforcement or military agency. If shipping to a blasting company, an ATF License will be required for purchase.