I've never had, or worked with, air compressors and air tools previously so at the grand age of forty-eight I've just bought an air compressor thanks to eBay's 10% voucher last weekend. I've worked out where the air comes out and I know it has a 1/2"BSP connection... and that's where my knowledge comes to an abrupt end. First subsequent purchase may well be a plasma cutter, but that's a different chapter. I'm baffled by the sheer number of different connection types and quick-release couplings available! I'm fortunate in that I'm able to invest in reasonably quality stuff, etc., and make them last. The wee village we live in has an old-school car bodywork repairer/painter and Archie has become a regular stop when I take the dogs for a walk; this evening he showed me his Prevost quick-release couplings and a few of his air tools. I've done some research on this forum and it Redashe Tundra hose (by coincidence Archie has Redashe hose) has been highly rated by forum members but it seems that whilst the bore of the hose is 3/8" the fittings at each end are 1/4"...? Some of the air tools I've been looking at (die grinders) seem to be 3/8" hose - am I misinterpreting this and they're all actually 1/4"..? Do I take it that all air tools have pretty much the same inlet (1/4" BSP) and once I decide on which coupling type to go for do I just buy 1/4" BSP to (whatever make) adaptor separately? Thanks!