Kohler, 2", Toilet Flapper With A Styrofoam Float Attached To The Chain, Used In Various 1.6 GPF 2 Piece Kohler ToiletsSuch As Couture, Devonshire, Portrait, Folio, Iron Works, Kathryn, Leighton, Memoirs, Pinoir, Revival, Serif, Wellworth& Highline.