The Whirlpool WP74009592 Infinite Knob for Cooktop allows users to adjust the heat settings of an electric surface burner with convenient, precise control. This black plastic replacement knob fits onto the control switch shaft and turns to select the desired burner temperature, from low to high settings. Its white indicator mark makes the selected heat level easy to identify. A cracke... https://www.partsmelange.ca/whirlpool-wp74009592-knob-infinite-for-cooktop