These strap-on cleats are meant for hardcore surfcasting applications. The jetties, and rock strewn shorelines that stripers inhabit can be dangerous places, these overshoes help to make them a little bit less-so by ensuring traction on the weed covered rocks that we love to climb on. The CastTrax model has screw-in studs, as opposed to the push in studs in the "RockTrax" model.