This is the skid plate, but not my Jeep and not my picture.
It's not the plate with the dimples in it, that's part of the bumper, it's the one below that. 3/16" plate steel, kinda heavy. It's also reaches a lot closer to the ground on mine than on this Jeep in the pic which is probably lifted 6" while mine is only lifted 2". So on mine, the bottom of the skid plate is right at the height of the axle tube. It actually doesn't extend much below the lower extent of the air dam either