[High Quality Material] The boiler cover knob is made of Bakelite, a flame retardant and heat-resistant material. The screws are stainless steel and do not rust. Durable construction ensures a long service life. The base is strong and stable. [Easy to Use and Clean] This pot handle is easy to install with mounting screws. Simply place the knob, rubber washer, and metal washer, then tighten securely. These universal pan handles are easy to clean with a damp cloth. The lid knob is dishwasher safe, ideal for replacing old or damaged knobs. [Ergonomic Knob] This universal pan handle with screw features an ergonomic design with a smooth, thick, burr-free rim that is comfortable to hold and safe for hands. The slightly rounded shape of the lid knob allows for easy handling. The sleek, simple design adds efficient functionality to your kitchen. [Dimensions] Handle diameter: 4.6 cm, base: 6.4 cm. Suitable for lids with a center hole of 5–10 mm. [Full Match Design] This replacement lid features a large, practical, and safe handle for easy gripping. The plastic handle helps prevent hand injury. Made from thick, durable material, it is easy to grip and comfortable to use, making it a reliable choice for everyday kitchen use. The classic black round design complements all types of pans and kitchen styles. [Application] This pan lid knob fits various types of lids, including those for pans, oil pans, frying pans, and glass lids. Set of 4 slow cooker knobs to meet household needs.