MATERIAL : Made of bakelite material , high temperature resistant , abrasion resistant , insulating , sturdy and durable to use , heat insulation and anti-scalding .EASY TO GRASP : Unique design make it easy and comfortable to grip , prevent the hot lids from burning your hands .EASY TO INSTALL : The screws is easy to fix , just put the knob , rubber gasket and metal gasket correctly , and then use screw to tight them .EASY TO CLEAN : Pot Lid knobs are suitable for 6mm mounting hole of lids . It is also simple to clean , after usage , you could use wet cloth to clean it , our lid knob is dishwasher safe and can replace greatly broken or old knobsWIDELY APPLICATION : Suitable for many kinds of cookware lids , such as kettle , oil pot , frying pan , pot lids , saucepan lids , pan lids and so on .Type : As Shown ,Package Including1