For those still running R12, this kit comes with everything needed to recharge the freon yourself. R12 is discontinued and no longer available for purchase in stores. The kit comes with the following:
(8) 14oz R12 refrigerant cans
(1) 4oz oil charge lubricant can
(1) Set of gauges
(1) Set of adapters
(1) Set of hoses
Selling as a whole and asking $300 + shipping.