THIS MOUNT WILL WILL LET YOU MOUNT YOUR WEATHER STATION ON THE WALL OR PIPE OR TOWER WITH 1.5' MUFFLER CLAMPS.THE PIPE IS 1-3/8"OD WITH A 1"OD. STUB ON THE END IT IS GALVANIZED PIPE WELDS ARE COLD GALV.THANK FOR LOOKING .I CAN MAKE CUSTOM MOUNTS, SEND MESSAGE ON HERE.MARK