PLEASE NOTE:WE ORDER THESE ITEMS AS WE GO ALONG, SO WE NEED TO CHECK FIRST TO MAKE SURE THERE IS AVAILABILITY. PLEASE EMAIL US BEFORE YOU PLACE YOUR ORDER . MANY THANKS IN ADVANCE.WATERWORLD SPORTS Produced especially for use with the European Specification for M26 threaded 1st Stages on SCUBA Diving Regulators designed for use with NITROX ? Oxygen Enriched Breathing Air. EN-144 style M25x2 cylinder thread suitable for use on cylinders manufactured to the rigid criteria laid down by the European Pressure Equipment Directive. Larger sized M26 threaded EN-144-3 outlet fitting for use with 300 Bar M26 DIN Nitrox type regulators. Fitted with extra-long valve control handle to allow ease of use when wearing gloves and all O-Rings etc. are manufactured from Viton and the cylinder valve requires O2 certification during assembly with a cylinder. Beaver cylinder valves are renowned for their uncompromising reliability and used and solely trusted by commercial and military divers worldwide. For details of our single outlet cylinder valve service kit, please see our Item Number CVSK.