Our 4th Gen Tundra A-Arm Skid Plates protect the lower control arms, the lowest hanging fruit on the front end, from damage while driving in rocky, off-road conditions. Carriage bolts are used to secure the skid in place on the lower control arm, preventing the bolts from being damaged. These skids are compatible with factory TRD suspension as well as the factory TRD skid plate, allowing you to maximize protection at the front of your truck. Installation is a quick and easy process, and black M8 hardware is included for the install.