Features:* These black plastic control knobs are best for replacing your broken gas cooktop.* Built-in a gap for easy installation, rotary switch.* The gasoline range knob is product of wonderful plastic, which is scratch-resistant and . Specification:* material: plastic* Colour: Black* Model: well suited for reverse zero diploma knob* Aperture: diameter 8mm* Size: four in diameter* Quantity: 5PCS Package content:5 x hob knobs Note: 1. The genuine colour of the item may be barely diversified from the pictures shown on web content brought on by many features akin to brightness of your video display and lightweight brightness. 2. Please allow slight manual measurement deviation for the data.