What brand are these cylinders? (pics inside)

Im just trying to find some rebuild kits for these. But im not positive on what brand they are.
 

 

 

look like the old EAI or hack shack cylinders to me

yeah they look like eai

it looks like the blue ends unscrew. You  should be able to clean it up inside and replace the o-rings easily.

Yeah, those look to be EAI cylinders...the blue ends give it away..

Is there a place that sells re build kits. Or am I just going to have to take it a part and start shopping around at the local O-ring stores?

--------------------------------------------- Originally posted by e10pvmt look like the old EAI or hack shack cylinders to me --------------------------------------------- i agree!