Slot-in cable gland, 482.6 mm (19Zoll), Size of mounting hole 9.5 x 9.5 mm, material: Sheet steel, surface: Zinc-plated, supply includes: 50 expanding nuts, Plastic washers, description: Consists of an expanding nut which is inserted into the square attachment hole at the front and then secured with the assembly screw. Packaging Unit: 50 pc(s).