These snap cable bushings are made in PA66 and are certificated UL/CSA, they are aviable with differents internal diametres and a wide range of internal mounting hole depht. They working very easily with a snap-fit engagement. They offer stability and also electrical and mechanical protection to cables and tubes. They can also be used to smooth and isolate the uneven and sharp edges.They are suitable for panel holes from 8,0 mm up to 63,5mm.