6L, Water Saver, Sloan (Regal) Exposed type Flushometer for floor mounted or wall hug bowls with 1-1/2" exposed top spud. Quiet, exposed diaphragm type, urinal flushometer chrome plated finish, metal oscillating NON-HOLD-OPENING lever handle, 1" IPS, screwdriver back-check angle stop with protective cap, adjustable tailpiece, vacuum breaker flush connection and spud coupling, wall and spud flanges. (YO indicates bumper on angle stop for open front seat without cover)