This Gas Cooktop Control Knob Set controls the heat of the appliance's surface burners and transforms the appearance of your Jenn-Air® gas cooktop to match other Pro-Style® kitchen appliances. This set includes (5) stainless steel knobs; each measures approx. 2" (5.1 cm) diameter. This knob set is designed to be used with select stainless steel Jenn-Air® gas cooktops; check to see if you model number is compatible. Replacing this part will require no tools, disassembly or repair experience.