Second Hand LAR V for sale on Boot 2005. Remarkable...   Aldo's mixer http://www.bubnotbub.com/mpsstaticmixersystemsENG.htm   65 Ah 2 meter German Scooter ;))     M&J San Diego California offers a superb gas switch block. There code GSB 1000. It is made extremely compact and a big advantage is when switching gas the knob has to be turned 180 degrees! The price is less than euro 300 !! M&J website: http://www.omniswivel.com 12520 Kirkham Court #1 Poway, CA 92064 Phone: 858.748.9442 Fax: 858.679.1632 Great stuff! Owner speaks Dutch / English / USA / Japanese ;))     They also sell very nice oxygen service swivels and these are patented: US patent 5275444 O-rings in oxygen compatible (brawn Viton Christolube grease) Inventor: Johan G. Wythoff patent: 5275444 If you are looking for adaptors, switches manifolds, they offer a large program for technical divers!