What adapter do i need

Ok so i just recieved this scba tank i bought on ebay a week or so ago, now im looking to see what type of adapter i need so i can fill my impact up. Any and all helps is much appreciated
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If you take that gray piece off, you should be left with threads that look like the fitting on the right. 



You'll need...
a CGA 347 style fitting. They come in hand tight or wrench tight. The wrench tight is pictured on the left. 
a blender valve
a length of hose and related adaptors
a foster fitting 
It's also very nice to add a 2-1/2" gauge to your system but, it's not needed. 

I do all my shopping for fittings at Nothshorecompressor.com but, there's plenty of other sources out there that will have what you need. 
Also, I have everything but the bleeder up for sale right now in the classifieds. Check your PM's
Tom