I have a NX bottle heater that is used but its in very good condition. The blow down tube has some small scratches on it but nothing major. It has NO burst disk. I also have the wiring harness and relays to go with it. I bought this a few months back and im not gonna use nitrous any more so its gotta go. I also have a tank, solenoids and jets, il have those up at a later date. Im asking $50 plus shipping for the heater and blow down tube.