A disposal flange is the piece that mounts into the metal collar of your garbage disposal, finishing the opening at the bottom of the sink and creating a clean, sealed connection between the basin and the unit below. The standout option is the color-matched line for quartz sinks, offered in white, bisque, grey, concrete, brown, and black so the flange blends into the basin instead of breaking it up with a ring of bare metal. Matching the flange to the sink keeps the eye on the basin rather than the hardware, which matters because the flange sits right in the center of view.