Inquiry (采购产品): oxy/act tanks I have both tanks and connection are both of the male thread.What kind of gauges do I need for them?? Tanks were given to me & would like to be able to use them. Also what type are they? Thanks PK **** Hidden Message ***** PK Paine TX 77077 USA Company: PK Electrical E-mail: pk455@netzero.com **** Hidden Message ***** pk455@netzero.com