1- ADJUSTABLE NITROUS PRESSURE SWITCH W/ ADAPTER. NOW YOU CAN KEEP YOUR BOTTLE HEATER ON ALL THE TIME AND ALWAYS HAVE YOUR BOTTLE PRESSURE BETWEEN 950 - 1000. THE SWITCH IS AJUSTABLE AND IS AVAILABLE IN 4AN OR 6AN ADAPTERS. WE ACCEPT CREDIT CARD PAYMENTS. FEEL FREE TO CALL US WITH YOUR QUESTIONS AT 281-304-1515.