Using 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 hole, which can bring you a satisfactory use experience. Features - Color: Black -Material:Plastic - Size: 8.00X8.00X3.80cm/3.14X3.14X1.49in -Inner hole: 17mm - Suitable for a variety of cookware lids with specific hole, such as frying pans, pans, pot lids, pressure cookers, etc. - Using plastic material, practical and heat-resistant, protect your hands and prevent burns. - Classic colors and workmanship can match well with your pot lid, very practical and beautiful. - Easy to install and operate, the knob is light weight, good size, easy to grip, use and store. - This pressure cooker knob is a kitchen gadget that prevents the hot lid from scalding your delicate hands. Package list: 4 x pressure cooker knob