Panel Mount Flange Material Plastic Includes (1) Hex Wrench (3) Mounting Screws (3) Pre-Installed Metal Set Screws For Use With Dwyer 4 1/2 in Diameter Pressure Gauges Dwyer Digimag Digital Differential Pressure Gauges Dwyer Magnehelic Differential Pressure Gauges Compatible Brand and Series Dwyer Digimag DM-1000 Dwyer Magnehelic 2000 Dwyer Magnehelic 605 Accessory Type Panel Mount Flange Features 4-1/2 in dia