LASCO 04-3677 Kohler Three Bolt Tank to Bowl Set, 5/16-Inch x 2 1/8-Inch, Solid Brass Kohler solid brass tank to bowl 3 piece set Includes 3 Each 5/16" x 2 1/8" Solid Brass Bolts, 6 Each Brass Washers, Rubber Washers, Hex & Wing Nuts Use to attach toilet tank to bowl Easy installation Toilet tank installation kit