Today, the CEJN proprietary fitting is typically encountered on the inflation valves of drysuits used in commercial diving while most drysuits in recreational diving use the International fitting. However, we do stock an original equipment manufacturer rubber inflation hose by SI TECH that is natively compatible with the CEJN coupling found on some SI TECH and Apeks inflation valves. See SI TECH CEJN Drysuit Inflation Hose.