Usage Tips:Product description: Product name: pot lid knobs Material: Bakelite Color: Black Size: As shown Fits between 5mm/0.2in and 11mm/0.43in mounting hole of covers Package includes:4 x Universal Replacement Pot Lid Knob Premium MaterialThese kitchen pot lid knobs are made of premium Bakelite material, which is non-toxic , heat-resistant and wear-resistant, sturdy and durable. Easy to install The screws are easy to fix, just put the cover button, rubber gasket and screw on correctly. metal gasket, then tighten with the screw. Ergonomic DesignThe unique ergonomic design makes it easy and comfortable to grip, which can prevent hot lids from burning your hands. After use, simply clean it with a damp cloth. Wide ApplicationsThe universal pot lid knobs are suitable for many types of kitchen utensil lids, such as kettle, oil pot , frying pan, pot lid, saucepan lid, frying pan lid, etc.