Universal Bakelite Replacement Knob Handle Non-Slip Pan Lid Knobs With Screws Pot Lid Knobs Pan Lid Cover Knobs Cookware Parts. The pot lid knob is made of high-quality bakelite material, which is durable, heat-insulating, and heat-resistant. It is versatile and suitable for covering various cooking utensils, such as oil pans, frying pans, pot covers, stew pot covers, water kettles, etc. Easy to operate, simply place the knob, rubber gasket, and metal gasket correctly, and then tighten them with screws to complete the installation.