Durable and heat-resistant: The pan lid knobs are made of bakelite and stainless steel, offering durability, sturdiness, heat resistance, and lightweight construction. They are easy to clean and dishwasher safe; a damp cloth is sufficient for cleaning after use. Size information: Each pot lid replacement knob has a base diameter of approximately 6.4 cm (2.5 inches), an upper diameter of approximately 5.4 cm (2.1 inches), and a total length of approximately 3.5 cm (1.3 inches). The screw diameter is approximately 1.6 cm (0.6 inches). The size is designed for comfortable gripping and secure fit. Easy to install: Simply attach the knob and included rubber gasket to the pot lid, then secure with the provided screws. Installation takes only minutes—convenient, time-saving, and effortless. Wide applications: These universal kitchen cookware lid knobs help prevent burns from hot lids. Compatible with most cookware lids, including kettles, oil pots, frying pans, pots, saucepans, and pans. Material: Bakelite and stainless steel Dimensions: Base diameter: 6.4 cm Package includes: 4 x pot lid knobs (rubber gaskets and screws included) Note: Color may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.