With the JBL ProFlora Adapt u- disposable for Dennerle, you can also use the pressure reducer of your Dennerle CO2 system for JBL u- disposalbe cylinders. Using the adapter is extremely simple and uncomplicated: screw the adapter into the pressure reducer, then screw the pressure reducer onto the bottle u500.JBL ProFlora Adapt u- disposal for Dennerle+ adaptor for Dennerle pressure reducer suitable for disposable bottles JBL u500 (M10 x 1)+ enables you to screw the pressure reducer (thread M10 x 1.25) onto u500 disposable bottles with thread M10 x 1