3 Bolt Mount Batch Feed StopperMfr #: 3158AMC HOST SERIES: Designed for those who frequently cook for guests and need advanced cleanup power POWERFUL GRINDING: 2,700 RPM, horsepower Vortex motor provides fast, powerful grinding of tough food scraps and helps reduce jamming CONTROLLED, SAFER GRINDING: Disposal only works when the batch feed stopper is engaged and locked into place, keeping unwanted items out of the disposal while in use for increased safety NOISE REDUCTION: Designed