The Aerpro CBBB1 Stainless Steel Universal Mirror Mount UHF Antenna Bracket has been designed to fit onto the mirrors of commercial vehicles. The bracket attaches horizontally to the mirror to allow the antenna to sit vertically off the mirror frame. Made from corrosion resistant 1.7mm thick 304 grade stainless steel, this high quality bracket which will withstand the harsh on-road and off-road driving environments. The Aerpro CBBB1 has a 16.5mm opening for the antenna to mount, making it suitable for use with all brands of UHF CB Antennas in Australia and New Zealand that have a 16mm mounting thread.