Timer knob Air Fryer HF-919B D Type Shaft Fits Shaft With "D” Shape Only This is a manufacturer substitution. Functional equivalent to prior parts. The damaged plastic knob can be replaced without disassembling the fryer These are made of high-strength, heat-resistant and wear-resistant materials, and are durable. Product Description Well-designed, excellent processing. Made of highly durable materials, 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. Please confirm your model above before ordering. This auction if for 1 timer knob for farberware HF 919B air fryers. 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 6mm "D" shape type fryer knob shaft only see example pic. So make sure to see pics and check measurements 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 . Product Description Well-designed, excellent processing. Made of highly durable materials, 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. Please confirm your model above before ordering. This auction if for 1 timer knob for farberware HF 919B air fryers. 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 6mm "D" shape type fryer knob shaft only see example pic. So make sure to see pics and check measurements 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 .