The PM4 from Auroralight is a robust, solid brass mount system designed to be cast into a concrete pedestal to create a durable, unmovable mount point for high end residential or commercial projects. It features 2, 3/4" bottom conduit entries for simple through wiring and 2 stainless steel J-bolts for a durable installation. Available with a 120 to 12v electronic transformer for mounting up to 2, 50w low voltage luminaires or a metal halide ballast for use with Auroralight Sumatra Series, Ceramic metal Halide directional luminaires. Machined from solid brass for extreme durability, these fixture mounts are built to the same quality specifications as our entire family of fixtures. Our proprietary screwless faceplate eliminates twisted wires and visible screws to make installation fast and neat. Specify in 20 or 39 watt Halide or 100w 12v Halogen configuration to meet your design needs. This mount option features a GE Ultramax electronic HID ballast for superior lumen maintenance and long life with low service costs.