This Plumb Pak Tank to bowl kit for American Standard toilets. Includes: (2) 5/16in-18 x 3in brass plated bolts, 3 1/2in x 2 1/8in x 1 3/16in recessed sponge rubber gasket, and all necessary nuts and washers.; ; Brand Name: Plumb Pak Product Type: Tank to Bowl Kit Material: Rubber Fits: American Standard Packaging Type: Bagged Number in Package: 1 Height: 5 in. Length: 4.63 in.