With the patented Ecovos+-System, you can quickly convert our STAUFF standard Ecovos hose connector into an interlock hose connector. Together with the corresponding crimping ferrule, you can use it for 4SP, 4SH and R15 multi-spiral hoses in nominal widths DN 16, DN 19, DN 25 and DN 31. It's as easy as this: using the appropriate tools, simply slide the plastic ring onto the hose nipple until it clicks securely into place. The result: maximum flexibility and compatibility with the smallest possible number of different components. Perfect for service vehicles and mobile workshops.