Easy to Use: Built-in 6mm hole. Please check the size carefully before purchasing. The gas hob knob is very easy to install and no additional tools are needed. You can use the markings on the gas hob knob to find the right adjustment direction.Premium Material: The gas hob knob is made of high-quality zinc alloy with brushed finish, which has excellent rust resistance and wear resistance and can be used for a long time. Package: You will receive 6 pieces of gas hob knobs with a shaft diameter of 6mm. Enough quantity for your daily replacement needs.Design: The hob knob is ergonomically designed with a smooth surface for your comfort.Application: The hob knob is an ideal gadget for home or restaurant kitchen and works with most gas stoves, burners, ovens and other cookware.