Here it is ! Eventually, slack.fr sell their own line-grip ! Moreover, it’s in aluminium, so very light. This tool, if you don’t know it yet, is used in order to remove the tensioning system of the line, by « holding » it. Like a prussik would do on a rope, but keeping the webbing flat so that it does not get damaged. Also useful in highlining, helps you to stay light, going with only this tool and a highslide to tension. Nice colors ! On the website page you can find a video that explains how to use it
And, moreover, slacktivity produce now the same available in Switzerland and soon worldwide :