This antenna mount is a perfect way to add CB radio and ham radio antennas, as well as flags. They attach under the hood on the driver's side fender utilizing an existing bolt so no drilling is necessary. Just pop off the trim, remove a bolt, place the fender mount, and re-install bolt. They're constructed from polished stainless steel to give you an attractive mount that's made to last. 1/2" mounting hole to accommodate most antenna stud assemblies.