Punch plug for Insertfix cable ties large head 6 gray plastic can 250 units The basic principle of the new INSERTFIX is that it can be installed by hand, with very little effort, in a 6 mm diameter hole. This new design uses lobe shapes that allow a very comfortable insertion, as well as a high extraction force thanks to the expansion of the lobes. Save up to 50% of your work time using the new INSERTFIX.