Timer knob FBW FT 42138 BK 3.2 Quart air Fryer This fits pin type fryer knob shaft only see example pic 6mm shaft with 2mm crosspin This is a manufacturer substitution. Functional equivalent to prior parts. The damaged plastic knob can be replaced without disassembling the fryer Read more These are made of high-strength, heat-resistant and wear-resistant materials, and are durable. Read more Product Description Well-designed, excellent processing. Made of highly durable materials, rigorously tested, compact & sturdy, longevous. Non OEM parts but meets OEM manufacturing requirements. Easy to install, saves time and money. This is a manufacturer substitution. Functional equivalent to prior parts. Ultra Durable, Quality Replacement. Made from durable high quality material and well-tested by the manufacturermade. Please confirm your model above before ordering. This auction if for 1 timer knob FBW FT 42138 BK 3.2 Quart air fryers for Farberware These air fryers are great but the factory knobs tend to break easily so just slide off the broken one and slide on this new replacement. This fits pin type fryer knob shaft only see example pic 6mm shaft with 2mm crosspin So make sure to see pics and check before you order buyers responsibility to check no returns. These fryers had 2 types of timer shafts Pin type and D type. we sell both types see our other listing. Make sure to see pics and measurements provided so you can check before you order buyers responsibility to check no returns.