ZPA mounting box completely M6 25mm mounting box, black with green-yellow color ring and built-in DIN 42801 connector M6 25mm thread length, nickel plated, suitable for installation in flush. Delivery: 1 insulating box, 1 ring nut, nickel plated nickel 2 nuts mounting box, black with green-yellow color ring and built-in DIN 42801 connector M6 25mm thread length, nickel plated, suitable for installation in flush. Delivery: 1 insulating box, 1 ring nut, nickel plated nickel 2 nuts