Triad-Orbit SM-PM1 Cloud Drop Pipe Mounting PlateThe Triad Orbit SM PM1 is a mounting plate with a 3 4" threaded hole that accommodates a standard 3 4" NTS pipe, making it ideal for cloud drop hanging speakers or extending them off of walls. It can either slide into the Triad Orbit SM WM1 wall plate or screw into the SM SW1 swivel (SM WM1 and SM SW1 available separately). Features For Extending Speaker Mount Reach Slides into the SM WM1 Wall Plate Screws into the SM SW1 Swivel 3 4" Thread for 3 4"