Product description
This is a very handy magnetic mount for survey grade GNSS/GPS antennas. Sturdy, compact, and surprisingly strong, this is a quick way of mounting your antenna to metal roofs, parapets, and other ferrous materials. The rod is threaded 5/8" 11-TPI (threads per inch) found on high-end surveying antennas and equipment.
More information is available on the website of Sparkfun.