The MTR425102 Screw-In Tree Mount, part of an extensive mount system from Auroralight, is a robust solution suitable for even our heaviest luminaires. The MTR425102 is machined from Solid Brass for durability and features a nylon base with multiple wire exit ports. The MTR425102 features a standard ½” (NPS) Universal Thread to work with many fixture brands. For easy and safe installation, pre-wire the luminaires on the ground, and use the supplied stainless-steel retention clip to hold connectors inside each Brass fitting.