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″ 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.