CCR Oxygen Needle Valve

CONDITION UNKNOWN... SOLD AS IS, NO GUARENTEES.  This appears to be an oxygen needle valve for CCR.  It is a single MAV with standard BCD style push button (functions) for gas adding.  The needle valve knob is stainless steel and "clicks" as you turn it, similar to the KISS "experimental" needle valves some of you may have seen.  Comes with pictured fittings including a QC6 male connection.  Untested, sold as is, no returns.