I have a Snap on R12 Air Conditiong Charging System. It is a roll around unit and is used to leak check, evacuate, charge and recover refrigerant from R12 automotive air conditioning systems. It is taking up room in my garage, i have not used it in forever, it was probably a couple thousand new but i am asking $200 or bestr offer. Location: Bath it's NOT ok to contact this poster with services or other commercial interests maine