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 ensures 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 is quick and tool-free. Wide applications: These universal cookware lid knobs help prevent burns when handling 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, upper diameter 5.4 cm, total length 3.5 cm, screw diameter 1.6 cm Package contents: 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.