Tool free installation for this trunk cover. No drilling required. Directly stick the buckles for easy installation. Please note when installing the rear buckles, align the bottom of the bracket with the groove line on the vehicle, pull the seaaling strip apart and then apply force to the bracket. This trunk shield is made of thickened aluminium alloy and waterproof PVC, which ensure the immobility and durability. The rear security cover can protect the items in the trunk from UV radiation; keep the private belongings away from prying eyes; improve the space utilization. The crossbar of the tonneau cover is perfectly conneted with back of the second row seats to avoid items falling dow from the curtain and provide full privacy protection.