Durable and heat-resistant: the pan lid holding handles are made of bakelite and stainless steel material, durable and sturdy, heat-resistance and , easy to clean and dishwasher safe, you can also jus more→t use wet cloth to clean it after use Size information: each pot lid replacement knob size is . 6.4 cm/ 2.5 inches in base diameter, 5.4 cm/ 2.1 inches in upper diameter, 3.5 cm/ 1.3 inches in total length, the screw size is . 1.6 cm/ 0.6 inches in diameter, proper size for comfortable gripping, not easy to fall off Easy to install: just attach the knob and rubber gasket to the pot lid, then use screws (included) to fix them, finish the installation in minutes, convenient to operate, save your time …