Pfeiffer blazers prisma RGA residual gas analyzer uhv 2 3/4 conflat SRS MKS. This product data sheet is originally written in English. This listing is for a pfeiffer balzers RGA. Software is included but I do NOT have any extra 24vdc (2 amp) power supplies to pair with these heads. Please note: at the time of listing I have roughly equal numbers of straight through and right angle heads. This item is in the category "Business, Office & Industrial\CNC, Metalworking & Manufacturing\Metalworking Equipment\Other Metalworking Equipment". The seller is "jjja727" and is located in this country: US. This item can be shipped worldwide.