Allstar Performace 1-1/4 in. O.D. aluminum body washers work with most body bolts to increase the surface area help prevent any pull-through. They also provide a smooth finished look to just about any race car. These quality washers are 1/8 in. thick and have a built-in pocket to accept most body bolts or other washer headed fasteners up to 3/4 in. in diameter.