KOHLER K-4774-7 Brevia with Quick-Release Hinges Elongated Toilet Seat, Black Black Quick-Release(TM) hinges allow seat to be unlatched from toilet for easy removal and convenient cleaning; no tools required. Quick-Attach(R) hardware for fast and secure installation. Color-matched plastic hinges. Engineered to ensure a proper fit on one- and two-piece toilets Ergonomically contoured seat enhances comfort.