We use filters in a helium detector that look like the pics that Grinder Bill posted. We clean these filters by forceing dry air thru a pvc pipe set up. The filters will turn back blue if let the dry air run long enough. I maintain air on underground telephone cables.
For personal use, I have bought hand tools from swap an pawn shops. I have never thought about the markings that are on them. Maybe I need to look closer the next time I find some "good buys".
I bought the sockets trays from HF. I like them being number to keep the sockets organized, however you need a deep drawer with impact sockets.
I am considering buying the service cart soon that HF sells. Can anybody give me any input on the quality of the carts they sell.
I bout a kra2055 that was in bad shape. The box was real messy an dirty. Took a few hours of cleaning but i finally got it. I paid about 200 for box an a few tools.