Panel Mount. Black high shock resistant, push-in fitting designed for use with PMAFLEX conduits, manufactured from modified Polyamides. They have a locking feature which prevents unauthorised removal by the need to use a screwdriver to reopen, these fittings can be used in a wide range of applications where it is important that the cable protection system offers a high grade of sealing and safety. Panel Mount fittings are a one piece quick and easy connection (no locking nut required to secure in place) that simply push fit into a panel or enclosure with a wall thickness of between 1.7-2.3mm. Cut-out diameter for 16mm : 16.5mm, 20mm : 20.5mm, 25mm : 25.5mm.