[High-Quality Material] The pot lid knobs are made of Bakelite, a healthy, fire-resistant, and heat-resistant material. The lid knob is made of heat-resistant Bakelite, and the screw is made of stainless steel that will never rust. The high-quality material is durable, significantly improving the lifespan of the pot handle lid, and the base is solid and stable. [Easy to Use & Clean] Our pot handles are easy to install with a retaining screw for easy attachment. Simply insert the correct knob, the rubber seal, and the metal washer, and screw it in. These universal pot handles are easy to clean with a damp cloth. Our lid knobs are dishwasher-safe and can replace old or broken knobs. [Ergonomic Knobs] This universal pot handle with a screw features an ergonomically designed knob with a smooth, thick rim free of burrs. It won't be sharp and cut your hands, providing a comfortable grip. The slightly rounded design of the pot lid knobs allows for easy movement. The elegant and simple design provides an efficient function in your kitchen. [All-Match Design] This replacement lid knob features a large, safe, and convenient handle. You can easily grip the lid, and the plastic handle prevents hand injuries. The thick material is easy to grip and comfortable in the hand, making it an essential choice for your home life. The attractive black and round shape complements various styles of pots and kitchens. [Applications] These pot lid knobs are suitable for many types of pot lids, such as stockpots, oil pots, frying pans, casseroles, saucepans, glass casseroles, and more. The 4-piece set of pot lid knobs will meet your needs.