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 an approximate base diameter of 6.4 cm (2.5 inches), upper diameter of 5.4 cm (2.1 inches), and total length of 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. Wide applications: These universal kitchen cookware lid replacement knobs help prevent burns from hot lids and are compatible with most cookware lids, including kettles, oil pots, frying pans, pots, saucepans, and pans. Material: Bakelite and stainless steel Package Contents: 4 x Pot lid knobs (including compatible rubber gaskets and screws) Note: Color may vary slightly due to lighting and screen settings. Measurement tolerance is ±1–3 cm.