The Whirlpool Electric Range Oven Black Burner Knobs X6 3188721 WP3196231 AP6007860 are a set of replacement knobs designed specifically for Whirlpool electric range ovens. These built-in, integrated knobs are black in color and made of plastic. They are compatible with various Whirlpool models and come in a set of six. These knobs are suitable for use in convection/steam oven combinations, convection ovens/stoves, and conventional ovens. The manufacturer, Whirlpool, ensures high quality and reliability for your cooking appliance needs.