Used for fastening most makes of 2-bolt toilet tank to bowl combinations. Contains 2 each 5/16" x 3" brass tank bolt, 2 each brass hex nuts, 4 each rubber and cloth insert washers, 4 each heavy nickle-plated round washers, 2 each wing nuts, 1 each sponge gasket, and 1 each fibre washer. Packed with instructions on card.