DescriptionUsing plastic material, these lid knobs are practical and heat-resistant, making them a great pressure cooker lid accessory. It will not hurt your hands, has a simple structure, is easy to install and disassemble, and is suitable for pressure cookers with a certain aperture, which can bring you a satisfactory use experience.Features-Color:Black-Material:Plastic-Size:8.00X8.00X3.80cm/3.14X3.14X1.49in-Size:7.80X7.80X3.60cm/3.07X3.07X1.41in-Note:aperture :19mm, 17mm. - Smooth edges and surface without burrs, safe and secure, it will not hurt your hands.- The product comes with the simple structure, easy and convenient to use.- Made with plastic materials, it is high temperature resistance and friction resistance.- Universal pot lid handle fits most pressure cooker to replace your broken or old knob of the pot. The product has fine workmanship.- Simple in structure, easy to install, the pot cover knob can bring much convenience to you.