Close Coupled Tank Kit w/ Recessed Gasket & 2 bolts. LARGEST BOLT HEAD IN THE INDUSTRY! Each bolt comes w/ 2 heavy brass washers, 2 cloth inserted rubbers washers and 2 solid brass hex nuts. MADE IN USA.Heavy brass bolts made from solid 5/16 Inch x 3 Inch brass with a 7/8 Inch diameter slotted headEach bolt comes with: Two heavy brass washers. Two cloth inserted rubber washers to ensure they don’t squeeze out of place during installation. Two solid brass hex nuts.