G27751 - Ultra Sensitive Glass Tube Geiger Counter Package (No Soldering) 

theelectronicg...
This is our most sensitive J304BY Beta Gamma Geiger Tube for its size paired with our C8600ASB board and a vial containing a radium watch hand. The connection wires on the C8600ASB are already soldered to the socket so all you need to do is screw the tube into the socket (do not overtighten) or the thin glass tube will break (Sorry we can not replace broken tubes). Next just connect a 9V battery (not included) and turn the C8600ASB on. The sensitivity is incredible and you will notice how sensitive it is to the watch hand in the vial. Sorry no case available. Brand new - no soldering needed!