We're just going with deep-air so selling the 'Nitrox/Trimix cascade system' I bought on eBay in 2001. Basic setup is everything for hooking up to 3 O2 and 2 HE cylinders and metering into a scuba cylinder. Also included Pelican case with 2 MSA MiniOX Analyzers and acc.. Also the Florida caver's original disc(excel spreadsheet) with his 'Nitrox/Trimix' tables. Books are: 'Oxygen Hackers Companion','Trimix' by Tom Mount, and 'Blending and Partial Pressure Methods of Mixing Nitrox' by Dick Rutkowski. Also misc. extra fittings, several inert gas regulators, etc. I of course will need a copy of your Mixed gas cert and a release of liability. Email for more detailed pictures at boblanham1@comcast.net. I'm on the West Coast in the San Francisco Bay area. Thanks Bob