Mounts to the Jeep Wrangler JL/Gladiator JT by fitting into existing mounting points, no vehicle modification required. Clamps onto the Front Runner Jeep Wrangler JL/Gladiator JT (2018-Current) Front Bar Roof Rack Mount (FAJL004). Comes in a set of (2) two, left and right side. Prevents any sideways movement of the Front Runner full-sized Jeep Wrangler JL Roof Rack, when travelling over rough terrain. Made of high strength steel and sealed with the same durable, weather resistant powder coating as the Front Runner Roof Racks. Installation hardware and fitment guide included.