Made of 3/8 inch cast steel, painted black inside and out, this heavy duty differential cover is designed to protect your differential and all it working parts for as long as you own your vehicle. These indestructible covers have been 44 caliber tested. If they can take a bullet at point blank range, they can take all that the trail has to offer. Includes extra reinforcement for the fill plug area. Inludes mounting hardware and instructions for ease of installation.