This magnetic antenna is the one that comes with the Drive Reach for passenger vehicles. If you are looking to replace or get an extra one, this is the one to get. Many RVers will get an extra antenna so that if they move the booster to a different vehicle, like from a truck to a 5th wheel RV, then you don't have to move everything.
WeBoost Drive Magnetic Outside Antenna. 3.4-inch Vehicle Antenna For Mobile Cell Phone Signal Boosters with 10-feet of low-loss cable and SMB Connector. 50 Ohm, 311215 Mobile Omni-Antenna Receives Signals from All Directions.